Which of the Following Operations Do Bidirectional Iterators Have

Which of the following operations do bidirectional iterators have?

A) Prefix operator* to make available the container element for use as l-value or r-value.
B) Overloaded operator+ to add an int value to the iterator to move the place the iterator points forward by the argument number of elements.
C) Overloaded operator* to multiply the iterator by an int value to move the place the iterator points by a number of elements equal to the argument.
D) Overloaded operator- to move the place the iterator points backware by a number of elements equal to the argument.