A....if its wrong im sorry but i believe its a because you will do 4x4 and will get the sum of 16ft square
So the equation is A = P(1+rt)
A = 10,000(1+0.07*6)
A = 10,000(1+0.42)
A = 14,200.00
3 people rent 18 movies altogether. I person would rent 6 movies