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 $\mathrm{mol} \mathrm{L}^{-1} \mathrm{~s}^{-1}$ and mol $^{-1} \mathrm{Ls}^{-1}$ respectively