. . . Choose the correct answer below. O A. If there is at least one element of set A which is also an element of set B, then A is a subset of B. If A is the empty set, which contains no elements, then there can never be any elements in A, much less elements in A that belong to B. O B. If all elements in set A are also elements of set B and all elements in set B are also elements in set A, then A and B are subsets. If A is the empty set, then there can never be any elements in A, much less elements in A that belong to B. O C. If there is at least one element of set A that is not an element of set B, then A is not a subset of B. If A is the empty set, which contains no elements, then there can never be any elements in A, much less elements in A that do not belong to B