What are the units of the rate constant for a zero-order reaction?

A.     s

B.     ${{\text{s}}^{ - 1}}$

C.     ${\text{mo}}{{\text{l}}^{ - 1}}\,{\text{d}}{{\text{m}}^{\text{3}}}\,{{\text{s}}^{ - 1}}$

D.     ${\text{mol}}\,{\text{d}}{{\text{m}}^{ - 3}}\,{{\text{s}}^{ - 1}}$

D

Over 34% confused the units with those of a first order reaction.