A man decides to make a rectangular garden along the back side of his home and wants to build a fence to enclose it. As luck would have it, he happens to have 60 feet of fencing materials laying around in his garage.

Keeping in mind that one side of the garden would be flush with the house, what is the maximum area that the man could enclose with his fence?

a. A= 0

b. A= 225

c. A= 900

d. A= 450