Suppose we have 10 rectangular prisms stacked on top of each other, as shown in the figure. Each one has l = 5 cm, w = 6 cm and h = 2 cm. What would be the total volume of the rectangular prism if none of the sections were staggered?
A) 60 cm^3
B) 300 cm^3 
C) 450 cm^3
D) 600 cm^3

I put A as my first choice but it was wrong.

PLEASE HELP ME!!!