A boat crossing a 275.0 m wide river is directed so that it will cross the river and land on the opposite shore directly across from the starting point.
a) The boat's velocity is perpendicular to the river flow.
b) The boat's velocity is parallel to the river flow.
c) The boat's velocity has both perpendicular and parallel components to the river flow.
d) The boat's velocity is irrelevant to the river flow.