The table below represents the percentage (%) distribution of students pursuing a Master of Business Administration (MBA) who secured jobs in four domains (Finance, Marketing, Human Resources (HR), and Operations) over the years 2018 to 2022. The table also provides the average starting annual salaries (in Rs.) for each domain. Additionally, the total number of students graduating each year is provided. Use the data to answer the following questions.

Year	Sector A (%)	Sector B (%)	Sector C (%)	Sector D (%)	Total Revenue (in crores)
2018	25	30	20	25	400
2019	20	35	25	20	500
2020	30	25	30	15	600
2021	35	20	25	20	700
2022	40	15	30	15	800

Which sector contributed the highest average percentage revenue over the five years?

The correct option is Sector A.

To find which sector contributed the highest average percentage revenue over the five years, we need to calculate the average of the percentage distributions for each sector (Sector A, Sector B, Sector C, and Sector D) over the given five-year period (2018 to 2022).

Let's look at the percentage contributions of each sector from the table:

1. Sector A:
The percentages for Sector A over the years 2018, 2019, 2020, 2021, and 2022 are 25%, 20%, 30%, 35%, and 40% respectively.
Sum of percentages for Sector A = 25 + 20 + 30 + 35 + 40 = 150%
Average percentage contribution for Sector A = $$\frac{150}{5}=30\%$$

2. Sector B:
The percentages for Sector B over the years 2018, 2019, 2020, 2021, and 2022 are 30%, 35%, 25%, 20%, and 15% respectively.
Sum of percentages for Sector B = 30 + 35 + 25 + 20 + 15 = 125%
Average percentage contribution for Sector B = $$\frac{125}{5}=25\%$$

3. Sector C:
The percentages for Sector C over the years 2018, 2019, 2020, 2021, and 2022 are 20%, 25%, 30%, 25%, and 30% respectively.
Sum of percentages for Sector C = 20 + 25 + 30 + 25 + 30 = 130%
Average percentage contribution for Sector C = $$\frac{130}{5}=26\%$$

4. Sector D:
The percentages for Sector D over the years 2018, 2019, 2020, 2021, and 2022 are 25%, 20%, 15%, 20%, and 15% respectively.
Sum of percentages for Sector D = 25 + 20 + 15 + 20 + 15 = 95%
Average percentage contribution for Sector D = $$\frac{95}{5}=19\%$$

Comparing the average percentage revenues:
- Sector A: 30%
- Sector B: 25%
- Sector C: 26%
- Sector D: 19%

Clearly, Sector A contributed the highest average percentage revenue of 30% over the five years.