In the selection of cadres, A, B, C and D stood out  After further investigation, 2 of the 4 people are proposed to be at the main section level, and 2 people are to be appointed as the deputy section level
It is known that: (1) If either A or B is the main division level, then D is the main division level; (2) If either A or B is the sub division level, then C is the sub division level; (3) If D is the main division level, then C is also Ren Zhengke grade
Both A and C are at the senior level