With no explanation, chose the best option from "A" or "B". Dave and Bill played the lotto together with an equal share and Dave has find out they've won $1000. Dave wants to tell Bill what amount they won.

A: Dave tells Bill they won 400 dollars and that Bill is going to get 200 dollars share.
B: Dave tells Bill they won 1000 dollars and that Bill is going to get 500 dollars share.
B.