Please help me solve those data structure questions and give me if explanation, thanks

5. There are five sequentially input data (A, B, C, D, E]. When we perform the PUSH(X) or POP(), which situation(s) of output will not happen? Please explain your answer step by step. (20%) (a) E, D, C, B, A (b) A, D, C, B, E (c) E, C, A, B, D (d) D, C, B, E, A (e) D, B, A, C, E Example PUSH(A) PUSH(B) POP() PUSH(C) POP) POP() Output: B, C, A Top Bottom