Whish is the response with the most effective use of 'however'? Revised version
A: Did John both clear up his room and washed the dishes?
B: John cleared up his room. However, Bill washed the dishes.
B1:John cleared up his room. Bill, however, washed the dishes.
B2:John cleared up his room. Bill washed the dishes, however.
Suppose that it is a text chat or a written conversation.