Answer: B.
Explanation: Option D is discarded because the sentence clearly needs to have its punctuation fixed; option C is wrong because the independent clause "it was unbelievable..." cannot be introduced with a comma, and while options A and B seem viable, the abrupt interruption of the normal flow of the sentence demands the use of dashes.
Because they had each other?!
1. C
2. C
3. D
These are the best choices.
