Steve Ballmer is considering two projects with cash flows as follows: Year Project A Project B 0 -$20,000 -$20,000 1 4,000 4,400 2 4,000 5,000 3 6,000 6,500 4 5,000 6,000 5 4,800 1,000 What is the cross-over rate?

: A) 12.23 percent B) 14.49 percent C) 8.70 percent D) 7.17 percent E) 10.38 percent