Here is a goal: How to finely chop an onion

How would you accomplish this goal?

pick from the following. A. Cut the top and bottom ends of an onion before peeling off the papery skin. Cut in half vertically. Make vertical and horizontal cuts into the onion halves, then make fine slices lengthwise. B. Cut the top and bottom ends of an onion before peeling off the papery skin. Cut in half vertically. Make vertical and diagonal cuts into the onion halves, then make fine slices lengthwise.
A.