What of the following statements is true about the pop) method for stack? Select one: 1. The pop) method will remove all items from the stack. 2. The pop() method will remove the item on the top of the stack, and return that item 3. The pop() method will remove the item from the bottom of the stack, and return that item 4. None of them Which of the following statement is true about the top() method in stack? Select one: 1. top() will return the item which is firstly added to the stack 2. top() will remove and return the item which is firstly added to the stack 3. top() will return the item which is lastly added to the stack 4. top() will remove and return the item which is lastly added to the stack Which of the following are true about a regular queue? Select one or more: 1. 2. 3. 4. We could only add an element to the front of the queue We could only remove an element from the front of the queue We could only remove an element from the end of the queue We could only add an element to the end of the queue. Which of the following are true about the implementation of enqueue() in array based queue? Select one or more: 1. The last position of the underlying list has been used indicates that the queue is full. 2. When the queue is full, a new list will be allocated and all elements from the original list 3. 4. will be copied to this new list. The arrayQueue has a member variable_end that refers to the last element in the queue. The last position of the underlying list has been used does not indicate that the queue is full