A truck carrying cans of paint contains P stacks. Each stack contains P/4 cases, and each case contains 12 cans. How many cans of paint are contained in 7 trucks? Choose the correct option.
A) P^2/21	B) P^2/336	C) 336	D) 21/P^2	E) 21P^2
There are 12 cans in each case.   There are 3P cans in each stack.   There are 3P^2 cans in each truck.   There are 21P^2 cans in 7 trucks.   The answer is 21P^2.
<result>E</result>
A truck carrying cans of paint contains P stacks. Each stack contains P/4 cases, and each case contains 12 cans. How many cans of paint are contained in 7 trucks?