According to Newton's second law, there are: N-mg=may in the vertical direction, and the solution is ay=0.3g According to the parallelogram law, the acceleration of the elevator is a = Aysin 30 = 0.6g, and the acceleration in the horizontal direction is ax = acos30 = 0.33g. According to Newton's second law, F = Max = 0.33mg Therefore, A and C are correct.

So: AC.