(A) : When a circular disc with a hole is heated, the diameter of the hole increases.
( R) : The distance between the molecules at the periphery of the hole increases as solid expands

Options

A. Both (A) and (R) are true and (R) is the correct explanation of (A)
B. Both (A) and (R) are true and (R) is not the correct explanation of (A)
C. (A) is true but (R) is false
D. Both (A) and (R) are false

Answer

A