Select correct statement :

Question

$\begin{array}{1 1}(a)\;\text{A zero order}\;rx^n\;\text{may not be a complex}\;rx^n\\(b)\;\text{Order of }\;rx^n\;\text{can be fractional}\\(c)\;\text{The order of a}\;rx^n\;\text{are only be determined from the stoichiometric equation of the reaction}\\(d)\;\text{Half life for a first order}\;rx^n\;\text{is independent of first order}\;rx^n\end{array}$