The refractive index of glass is 1.520 for red light and 1.525 for blue light. Let $D_1$ and $D_2$ be angles of minimum deviation for red and blue light respectively in a prism of this glass, then :

Question

( A ) $D_1 > D_2$
( B ) $D_1 = D_2$
( C ) $D_1 < D_2$
( D ) $D_1$ can be less than or greater than $D_2$ depending upon the angle of prism