Below is a statement (A) and a reason (R)-
(A): Left a small gap between tracks
(R): Iron spread in summer.

A. (A) is true but (R) is false

B. (A) is false but (R) is true

C. Both (A) and (R) is true and (R) is the correct explanation of (A)

D. Both (A) and (R) is true and (R) is the not correct explanation of (A)

Answer: Option C