Context: On Sunday we went canoeing and kayaking on the river . We chose to go upstream which was also against the wind . We stopped on an island in the middle of the river and had lunch snacks there .

Question: What must true of how fast the river flowed ?
Options:
0. The river could not have flowed faster than we could row downstream .
1. The river could have flowed faster than we could row upstream .
2. The river could not have flowed faster than we could row upstream .
3. None of the above choices .
Answer: 2