20. Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as: Assertion (A): The parts of the plant which can be eaten are called edible parts. Reason (R): Potato is an example of an underground stem. (a) Both A and R are true, and R is the correct explanation of A. (b) Both A and R are true, and R is not the correct explanation of A. (c) A is true but R is false. (d) A is false but R is true.
