The correct order of reactivity in hydrolysis of the following acid derivatives is
`CH_(3)COCl` (I), `CH_(3)CONH_(2)`(II),
`CH_(3)COOCH_(3)` (III), `(CH_(3)CO)_(2)O` (IV) is
A. `I lt II lt III lt IV`
B. `IV lt III lt II lt I`
C. `II lt III lt IV lt I`
D. `II lt III lt I lt IV`