An Assertion (A) and a Reason (R) are given below.
Assertion (A): A little gap is left between iron rails.
Reason (R): Iron expands in summer.
Choose the correct option.1
A is true but R is false.
2
A is false but R is true.
3
Both A and T are true and R is the correct explanation of A.
4
Both A and R are true but R is not the correct explanation of A.