Test reliability refers to the objectivity of the test, and refers to 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? ['In the same composition, Mr. Wang gave 50 points, but Mr. Li gave only 40 points.', 'Many girls did not answer this question about football matches correctly.', 'The weather is particularly sultry on the day of the test, affecting the performance of many students.', 'Teacher Li took two big questions before the test, and the students were very happy after the test.']