Chapter 358: Li Yun is the winner

At ten o'clock in the evening, the Zhonghai Municipal Examination Institute issued an announcement regarding the handling of the fifth question of the mock exam and the multiple-choice question of mathematics. "...Finally, after the question group and invited experts and professors, it is decided after research that there are two answers to the fifth question of mathematics: B and C. In this exam, choose B, or choose C, or both, can be regarded as the correct answer! Thanks to all sectors...