PMP Certification: What is the correct critical path on this diagram?

Please take a look at this imageand help me understand what the correct sequence is for the critical path. I assume that the numbers in this image correspond to duration.

https://postimg.org/image/47hg5d6np/

My understanding is that the critical path consists of the path that adds up to the longest duration, but the program says that is not correct.

Thanks in advance!

Start(0) -> B(3) + C(2) + D(6) + F(5) + I(3) + J(3) -> Finish(22)

What did you get?

That worked, thanks! I think I had come up with this solution, except I didn’t click the Start and End boxes and so it came back as being wrong. Appreciate your help on this.

So as a project manager, your job is to figure out the maximum number of man-hours you can bill to your client? :stuck_out_tongue: