Why did Confucius disapprove of Yan Hui’s visit to the State of Wei?

A、HewasclearthatYanHuiwentthereforthepurposeoffame;
B、HewasconcernedthatifYanHuimightgetkilledbythecruelking;
C、HewasnotsatisfiedwithYanHuiforhehadn’tlearnedwell;
D、HewasnotsurewhetherYanHuiwouldbeabletofulfillhispurpose