DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Yeast is a single celled organism that can respire an aerobically. Reason (R): Yeast is used to make wine and beer.

• A. Both A and R is true and R is the correct explanation of A.
• B. Both A and R is true but R is not the correct explanation of A.
• C. A is true but R is false.
• D. A is false but R is true.