It [sleepiness] filled my brain like a cloud. I was going, going...

It [sleepiness] filled my brain like a cloud. I was going, going...

A.Due to sleepiness, I was not aware that I had lost my sense of direction.

B.I was almost overcome by sleepiness and would doze off any moment.

C.I was trying hard to beat back sleepiness so that I could keep moving.

D.Sleepiness made me relaxed, as if I were walking under a cloud.

正确答案是B