answer pleas and steps

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