PUSH operation may result in underflow condition.

The process of inserting an element in Stack is called:

1. Create
2. Push
3. Evaluation
4. Pop

In a Stack, if a user tries to remove an element from an empty Stack, the situation is called:

1. Underflow
2. Empty collection
3. Overflow
4. Garbage collection

Pushing an element into a Stack already having five elements and a Stack of size 5, then the Stack becomes:

1. User flow
2. Crash
3. Underflow
4. Overflow