Which of the following combinations is correctly matched?

Options

A. `H_(3)C-underset(D)underset(|)overset(H)overset(|)C-Cl,S_(N)2` Walden inversion
B. `H_(3)C-underset(D)underset(|)overset(H)overset(|)C-Cl,S_(N)1` Waldem inversion
C. `H_(5)C_(6)-underset(CH_(3))underset(|)overset(C_(2)H_(5))overset(|)C-Cl,S_(N)1` only retension
D. `H_(5)C_(6)-underset(CH_(3))underset(|)overset(C_(2)H_(5))overset(|)C-Cl,S_(N)1` only inversion

Answer

A