How is it controlled that a recursion function be called several times? What kind of command and control structure is employed in this case?

What is the return value of the function call Comp(4, 5), given the recursive function Comp defined below:     int Comp(int a,  int b)  {            if (a + b <= 6)                  return 3;            else                  return Comp(a-1, b) + Comp(a, b-1);     }

How is it regulated that a recursion function be called several times? What type of command and control structure is used here?

What is the functionality of base case(s) ? Group of answer choices: Call other base cases Make recursive function call Checks the logical error To complete the recursion   What is the functionality of base case(s) ? Group of answer choices: Call other base cases Make recursive function call Checks the logical error To complete the recursion   What is the functionality of recursive helper method ? Group of answer choices: Define base cases and recursive cases Extends the original recursive method Makes infinite function calls Make function calls to original recursive method   A recursion function can be implemented without pending operations. Group of answer choices: True False