Some students of master class hold the 20th anniversary party.The contact person Wang Ning said that some students in the class could not participate.The monitor said: I think there are at most two students in the 513 dormitory Qiu Ju, A Chun, Xiuxiu and Nan Nan who can participate.The youth league secretary said:Monitor, I think you're wrong.
wrong, which of the following must be false?
Among the four of Qiu Ju, A Chun, Xiu Xiu and Nan Nan, two can participate.