Two rowers, who can row at the same speed in still water, head across a river. . the first rower (alice) heads straight across (but of course her boat is pulled downstream by the current). . the second rower (bianca) heads slightly upstream, so that with the pull of the current she arrives directly opposite their starting point. . who arrives at the other side first? . a) alice. b) bianca. c) it's impossible to tell without more information.