The WideArray class implements a special array type for which each element consists of two 64-bit (long) quantities. That is, the first element of a WideArray is the first two elements of the underlying long array, the second element of the WideArray consists of the third and fourth words of the underlying array, etc. lass WideArray public WideArray(int n ) { m datanew long[2*n]; m size n // Other class methods lass waIterator [ puhlic bool operator const waTterator &rhs) void onerator++(int dummy) pairklong ng operator return m_ptr!-rhs.m_ptr; y return pairklong,long> (*m_ptr, *(m_ptr+1)) ; private long *mptr; waTterator waRegin() waIterator waEnd return waIterator(m_data) private: nt m size long *m_data; a. Why are waBegin and waEnd defined as members of the WideArray class rather than of the waIterator class? b. Write the implementation of operator++. c. Write the implementation of waEnd