Detailed Instructions: In this task you are given a premise and two alternatives in Chinese. You must choose the alternative that is more plausibly the 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: 我向收费站服务员付了费。
(1)她让我通过了收费站。(2)她在收费站把我拦下了。
A:
1