Test reliability refers to the objectivity of the test: the degree to which a test reflects the true level of the candidate. According to the above definition, which one has little effect on the reliability of the test? ['Teacher Zhang gave 50 points for the same composition, but Teacher Zhao gave only 30 points.', 'Many girls did not answer this question about football matches correctly.', "The test day was extremely sultry, and many students' performance was affected.", 'Before the college entrance examination, the math teacher won two big questions, and the students were very happy after the entrance examination.']