What is the primary purpose of the "push" operation in a stack? To remove an element from the stack. To retrieve the top element of the stack. To add an element to the top of the stack. To search for a specific element in the stack.

Suppose someone designed a Stack data abstraction with the following operations:(a) Push: Adds an element on top of the stack.(b) Pop: Removes the top element from the stack.(c) Top: Returns a pointer to the top of the stack.Give your critical comment on the design of this data abstraction.

What is the role of the top variable in a stack implementation?*1 pointa. It stores the value to be pushed.b. It tracks the most recently added element.c. It points to the bottom of the stack.d. It manages the display operation.

What is the purpose of using a Minimum Stack?

A stack is implemented using an array and the top is always pointing to the first position in the array. Assuming the stack is not empty, the time complexities of push() and pop() operations are:Group of answer choicesO(n) and O(1)O(n) and O(n)O(1) and O(n)O(1) and O(1)

What is a primary purpose of a stack data structure?a.Perform push and pop operationsb.To organize data alphabeticallyc.To manage function calls and local variables efficientlyd.To provide fast retrieval of elements