Assertion (A): All mammals are warm-blooded animals. Reason (R): Warm-blooded animals can regulate their body temperature internally. Which of the following is correct?

A. BOTH A AND R ARE TRUE, AND R IS THE CORRECT EXPLANATION FOR A.

What is the 7th letter of the English alphabet?

A. G

In the series A, B, C, D, E, F, G, how many letters come before the letter 'D'?

B. 3

Assertion (A): Some fruits are sweet. Reason (R): All sweet things are fruits. Which of the following is correct?

C. A IS TRUE, BUT R IS FALSE.

Assertion (A): All squares are rectangles. Reason (R): Rectangles have four sides. Which of the following is correct?

A. BOTH A AND R ARE TRUE, AND R IS THE CORRECT EXPLANATION FOR A.