If we have two sets, s1 and s2, and we want to check if all the elements of s1 are present in s2 or not, we can use the function:

A. Set B. List C. Tuple D. Dictionary

A. add() B. insert() C. append() D. extend()

A. remove() B. delete() C. discard() D. pop()

A. Returns the number of elements in the set or tuple B. Converts the set or tuple to lowercase C. Converts the set or tuple to uppercase D. Removes the last element