How do you solve this IRR question? 300, following, question, identify

nitoha

Two projects have the following cash flows:
Time 0 1 2
Project A 100 275 300
Project B 100 300 200
The internal rate of return (IRR) problem most likely to emerge with each project’s cash flow is:
a. Both projects have a multiple IRR problem.
b. Project A has a multiple IRR problem, Project B has no IRR.
c. Project B has a multiple IRR problem, Project A has no IRR.
How do you identify which project has a multiple IRR or no IRR?
I’ll post answer shortly. Thanks!