Lindy is probably right on this one, I’m just suggesting you should weigh what they will consider more concerning, a W that was retaken as an A, or receiving a B/C in a class they expect you to get an A in. I would take the A all day, as W’s happen to the best of us, and they know that.
If you had a pattern of W’s I might go with the B/C, but you don’t.