Context: I was listening to McCain 's nomination acceptance speech on the radio on the way to the airport yesterday and it sounded so different than it did in the arena . I actually got to hear the fiery end to the speech , the part where he said : Stand up , stand up , stand up and fight . Nothing is inevitable here .

Question: Why did the speech sound so different ?
Options:
0. Because McCain was having trouble with his voice .
1. Because of the trouble with the microphone .
2. Because of the acoustics in the arena .
3. None of the above choices .
Answer: 2