An achromatic prism is made by crown glass prism `(A_(c) = 19^(@))` and flint glass prism `(A_(F) = 6^(@))` . If `.^(C)mu_(y) = 1.5` and `.^(F)mu_(v) = 1.66`, then resultant deviation for red coloured ray will be
A. `1.04^(@)`
B. `5^(@)`
C. `0.96^(@)`
D. `13.5^(@)`