根据下面资料，回答题 It was not exactly a perfect night in Washington for Fourth of July fireworks this year, when fog and rain blanketed the sky and made the Independence Day show from the National Mall less impressive than usual to those who had staked out a spo

A. who are able to notice the suspicious points of fireworks that are difficult to find out

B. who are not able to see the fireworks clearly because of bad weather

C. who become aware of things through the senses

D. who observe and comment on something