Given the following cash flows for project A and project B: Year 0 1 2 3 4 Project A -15000 4000 2000 7000 5000 Project B -17000 5000 2000 7000 6250 Which of the following statement is correct? O a. The crossover rate of the two projects is higher than the IRR of the project with the lowest IRR of both projects. O b. The crossover rate of the two projects is 4.6%. O c. The crossover rate of the two projects is 6.8% Od. The crossover rate of the two projects is 7.0% Oe. The crossover rate of the two projects is the mean of the IRRS of the two projects