The number of incorrect statement/s from the following is ________.
A. The successive half lives of zero order reactions decreases with time.
B. A substance appearing as reactant in the chemical equation may not affect the rate of reaction
C. Order and molecularity of a chemical reaction can be a fractional number
D. The rate constant units of zero and second order reaction are `mol L^(–1) s^(–1)` and `mol^(–1) L s^(–1)` respectively