Given a premise and two alternatives, choose the alternative that is a more plausible cause or effect of the situation described by the premise. The input format is "premise
(1)alternative_1(2)alternative_2", the output should either be "1" or "2" based on your judgment.
Q: The pair of students came under scrutiny by the teacher.
(1)The students both received excellent grades.(2)Their responses on the assignment were identical.
A: 
2