Context: I said ummm who is this ? ? ? He tried deepening his voice and said " This is Bob . " I said Ah Bob ? ? so we hung up and since I do nt like liars , I called him back and said Hey Just to let you know , If your going to make up a fake name , Least let it be convincible .

Question: Why did the man try deepening his voice ?
Options:
0. Because the writer asked who it was .
1. Because his name is Bob .
2. None of the above choices .
3. He wanted to pretend he was someone else .
Answer: 3