The dipole moment of compound AB is 10.92 D and that of compound CD is 12.45 D. The bond length AB is $2.72 \mathring{A}$ and that of CD is $2.56 \mathring{A}$ then for these compound true statement is :

Question

( A ) More ionic nature in AB
( B ) Not predicted
( C ) Equal in both
( D ) More ionic nature in CD