A Boat Travels at a Constant Speed with Respect to Still

Multiple Choice

A boat travels at a constant speed with respect to still water. The water is moving with respect to the bank at a speed almost as large as the speed of the boat with respect to still water. Assume a round trip of constant distance (with respect to the bank) in the boat under two scenarios: downstream, then upstream or cross-stream, then back. All of the following statements are correct except

A) the speed of the boat when returning upstream is very small.
B) the cross-stream scenario involves a cross-stream component that is small, but much larger than the upstream speed of the boat.
C) the cross-stream time is independent of the stream speed compared to the boat speed.
D) the time spent traveling downstream is very small compared to other travel times in the problem.