If the net cash flows in a capital budgeting problem start out negative followed by positive cash flows but end up with negative cash flows, which of the following is not true?

Group of answer choices

a. There can be up to two IRRs.

b. The depreciation expense must have been larger than net income in the last year for net cash flow to be negative.

c The MIRR provides a valid go, no go decision for the project.

d. NPV could be positive or negative.