Read the following information carefully and answer the question based on that.
Two families are planning to go on a canoe trip together. The families consist of the following people: Robert and Mary Henderson and their three sons Tommy, Don and William, Jerome and Ellen Penick and their two daughters Kate and Susan.
There will be three canoes with three people in each canoe. At least one of the four parents must be in each canoe. At least one person from each family must be in each canoe.
If the two mothers ride together in the same canoe and the three brothers each ride in a different canoe,which of the following must be true?
- Each canoe has both males and females in it
- One of the canoes has only females in it
- One of the canoes has only males in it
- The sisters ride in the same canoe