+ a circular array with front and rear indices and a boolean flag to indicate fullness(or emptiness ba circular array with front and rear indices and an integer counter of entries o a circular array with front and rear indices taking special values to indicate emptiness 3.3 Circular Implementation of Queues in C++A circular array with front and rear indices and a Boolean flag to indicate fullness (or emptiness). A circular array with front and rear indices and an integer counter of entries. A circular array with front and rear indices taking special values to indicate emptiness. 3.3 Circular Implementation of Queues in C++