Answer:
A but keep C in mind.
Step-by-step explanation:
It was a shocking human interest story. It was news written by someone who had seen it.
Imagine waking up one morning and discovering that Washington City or Baltimore or even New York had been taken out with just 1 weapon. People were horrified enough with 911 never mind what I've described. That's what Hiroshima was like.
I'd like to think that B was true, but there are two things wrong with it.
Many Americans and many politicians agreed that there was no other choice. Read about Okinawa.
Many when they found out were not shamed at all. They agreed with it.
I'd also like to think that C was true, and I think this could be an answer depending on your grade level. But I don't think it is the answer.
D came much later.
My own personal feeling is A. But keep C in mind.