You are considering the following two mutually exclusive projects. Project A has the initial investment of 200,000 and the cash flows of 120,000, 180,000, and 20,000 for the next three years, respectively. Project B has the initial investment of 400,000, and the cash flows of 280,000, 200,000, and 120,000 for the next three years, respectively. The crossover point for these two projects is ________ percent.

a) 27.61

b) 18.19

c) 33.20

d)21.87