JEE Main 2023 · 1 February · evening · Single correct · +4 / −1

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Gypsum is used for making fireproof wall boards.
Reason (R) : Gypsum is unstable at high temperatures.
In the light of the above statements, choose the correct answer from the options given below :

1. (a) Both (A) and (R) are correct but (R) is not the correct explanation of (A)
2. (b) Both (A) and (R) are correct and (R) is the correct explanation of (A)
3. (c) (A) is correct but (R) is not correct
4. (d) (A) is not correct but (R) is correct