Why Option B can't be the answer?

4, 3, 1, 2

1) Push(4) , Push(3), Push(1) [4 is at bottom and 1 is at the top]

2) Pop(1) $1$

3) Push(4) , Push(3), Push(2)

4) Pop(2) $2$

5) Pop(3) $3$

5) Pop(4) $4$

So the obtained sequence is 1, 2, 3, 4.

This is my approach. Please someone verify it

4, 3, 1, 2

1) Push(4) , Push(3), Push(1) [4 is at bottom and 1 is at the top]

2) Pop(1) $1$

3) Push(4) , Push(3), Push(2)

4) Pop(2) $2$

5) Pop(3) $3$

5) Pop(4) $4$

So the obtained sequence is 1, 2, 3, 4.

This is my approach. Please someone verify it