Which of the following orders regarding the base strength of a leaving group in a reaction of an acid derivative with a nucleophile is correct :

Options

A. `Cl^(-) gt RCO O^(-) gt RO^(-)`
B. `Cl^(-) gt RO^(-) gtRCO O^(-)`
C. `RO^(-) gt RCO O^(-) gt Cl^(-)`
D. `RO^(-) gt Cl^(-) gt RCO O^(-)`

Answer

C

Explanation

Based on order of nucleophilicity