询问并建议：Let's... because it's... — 英语选择题
题目
天气预报说：上午有雨，午饭后有风。Lily和朋友想在午饭后放风筝。哪句话最合适？A. Let's fly a kite because it's rainy after lunch. B. Let's fly a kite because it's windy after lunch. C. Let's fly a kite because it's rainy in the morning. D. Let's read a book because it's windy after lunch.