(A) : A brass disc fits snugly in the hole of the iron plate. To remove the disc the combination must be heated.
( R) : The coefficient of linear expansion of brass is less than that of iron

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

D