Assertion (A): A chemical reaction becomes faster at higher temperatures. Reason (R): At higher temperatures, molecular motion becomes more rapid. Which of the following is correct?

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