B. It's the equivalent of receiving 85 out of 100, which falls
in the middle of the B, which is 80 to 89. To find the answer, you
take 8.5 and multiply it by 10 to get 85.
Oh, dude, an 8.5 out of 10 would be like a B+ on a letter grade scale. So, you're doing pretty good, but like, not amazing. Keep it up, and maybe you'll hit that A range next time.