Directions: Question consists of five statements followed by options consisting of three statements put together in a specific order. Choose the best option which indicates a valid argument, that is, where the third statement is a conclusion drawn from the preceding two statements.

A. All software companies employ knowledge workers.
B. Infotech employees are knowledge workers
C. Infotech is a software company
D. Some software companies employ knowledge workers.
E. Infotech employs only knowledge workers.