Canfly Airlines is considering two mutually exclusive projects, Project A and Project B. Th projects have the following cash flows (in millions of dollars): The crossover rate of the two projects' NPV profiles is 9 percent. What is the cash flow for Project B at t=0 ? A) $4.00 mill B) $4.22 mill C) $4.51 mill D) $8.73 mill E) Insufficient information