To which of the following the "in" operator can be used to check if an item is in it?

A. list() B. [] C. empty_list() D. list[]

A. Returns the length of the list B. Converts the list to lowercase C. Converts the list to uppercase D. Removes the last element

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

A. Creates a new list B. Converts a list to a tuple C. Converts a string to a list D. Creates a tuple