Adiponitrile Is Produced by the Reaction of HCN and Butadiene

Adiponitrile is produced by the reaction of HCN and butadiene: If 450 kg of butadiene and 400 kg of HCN were to react to completion, what is the maximum amount of adiponitrile that would be produced?

A) 450 kg
B) 8.32 x 10³ moles
C) 1.48 x 10³ moles
D) 800 kg
E) 900 kg