2. For this question, only consider positive numbers. a. Examine these functions: void twoA worker (const int a) { cout 0) twoA worker (a - 1) ; } void twoA (const int N) { twoA worker (N) ; cout 0) twoB worker (a - 1) ; cout 0) { twoA (W) ; twoCee (W - 1) ; twoA (W) ; } } State in plain English exactly what the function twoCee does, and show (or explain) how you worked that out