Task: Wrong Candidate Generation
Input (English): Context: On my second month on the pill i had severe abdominal pain with vomiting but it only lasted 5 hrs and then went away . I did n't stop taking the pill because it had only lasted 5 hrs and the pain never came back after that . Is this type of pain normal for the first few months ? Severe abdominal pain is one of the side effects to look out for why is this ?. 
Question: What 's a possible reason the writer had severe abdominal pain while on the pill ? 
Correct Answer: None of the above choices .
Output (English): Because the pain never came back .