问题详情

The bathing machine was used ______.
A. so that the horses could drink at the water"s edge
B. so that the hood could be projected towards the sea
C. so that the bather could hide from the sea
D. so that the bather could be screened(掩蔽)until she was in the sea请帮忙给出正确答案和分析，谢谢！