The correct decreasing order of their reactivity towards hydrolysis is
A. `PhCOClgtp-O_(2)NC_(6)H_(4)COClgtp-CH_(3)OC_(6)H_(4)COCl`
B. `PhCOClgtp-CH_(3)OC_(6)H_(4)COClgtp-O_(2)NC_(6)H_(4)COCl`
C. `P-O_(2)NC_(6)H_(4)COClgtPhCOClgtp-CH_(3)OC_(6)H_(4)COCl`
D. `p-O_(2)NC_(6)H_(4)COClgtp-CH_(3)OC_(6)H_(4)COCLgtPhCOCl`