Answer:
B. There could be multiple IRRs
Step-by-step explanation:
IRR is the discount rate that equates the after tax cash flows from an investment to the amount invested.
When cash flow from a project is uneven; that is cash outflow occurs not only at the beginning of the project but also during the lifespan of the project.
In this question, there's a cash outflow in the 2nd and 4th year. This makes IRR and unsuitable method to use.
I hope my answer helps you