Given below are two statements : one is labelled as Assertion (A), and the other is labelled as Reason (R).

Assertion (A) : The primary function of the Golgi apparatus is to package the materials made by the endoplasmic reticulum and deliver it to intracellular targets and outside the cell.
Reason (R) : Vesicles containing materials made by the endoplasmic reticulum fuse with the cis face of the Golgi apparatus, and they are modified and released from the trans face of the Golgi apparatus.

In the light of the above statements, choose the correct answer from the options given below :

The assertion (A) states that the primary function of the Golgi apparatus is to package the materials synthesized by the endoplasmic reticulum (ER) and deliver them to intracellular destinations or to the exterior of the cell.

This description is accurate. After proteins and lipids are produced in the ER, they are transported to the Golgi where they undergo further processing, sorting, and packaging into vesicles that are then directed to their final locations.

The reason (R) describes the transport route: vesicles that originate from the ER fuse with the cis‑face of the Golgi, where the cargo is modified, and the processed vesicles exit from the trans‑face of the Golgi.

This statement is also correct. It correctly outlines the directional flow of material through the Golgi stacks (cis → medial → trans) and the fusion/exit points.

However, while (R) accurately depicts the mechanistic path of vesicle movement, it does not explain *why* the Golgi’s primary role is to package and distribute materials. The primary function (as stated in A) is a broader functional description, whereas (R) merely details the physical pathway of vesicle trafficking.

Therefore, both statements are true, but the reason does not serve as the logical explanation for the asserted primary function.

Hence, the correct choice is: Both A and R are true but R is not the correct explanation of A.