When I did Robo, D and E practically never filled up .__. C took quite a while to wait for, so most of the time I went for A or B. Most of them were successes, but I either had a filled inventory or I was dead at the end Dx
xD i was always trying A and it was usually a success, a sloppy one, but a success. in the end it was mostly just people timing their heart usage so they'd be alive when time ran out lol