what is the order with respect to each reactant?

For the reaction A(g)+B(g)+C(g)D(g) the following data were obtained at constant temperature: What is the order with respect to each reactant? a. [A]=1st,[B]=1st,[C]=0 b. [A]=1 st, [B]=2nd,[C]=0 c. [A]=2nd,[B]=2 nd, [C]=0 d. [A]=1st,[B]=2nd,[C]=1 st e. [A]=1st,[B]=1st,[C]=1st