B is fine. The rule for 'as' in comparisons of this type is this:
'like' goes with nouns (or noun phrases, such as "many other professional wrestlers")
'as' goes with phrases that have verbs in them (such as "
did many other professional wrestlers")
Correct: 'Cycling is a low-impact exercise, as is swimming.'
Correct: 'Cycling, like swimming, is a low-impact exercise.'
Wrong: 'Cycling is a low-impact exercise, like swimming is.'
Wrong: 'As swimming, cycling is a low-impact exercise.'