2) (20 marks) Explain what the following C functions do (at a higher level of abstraction) Submit your answers in a plain-text file named a5q2.txt. You can assume that in all cases the input argument n is always positive, i.e., n > 0. Briefly explain the function in examples a) and b) and show the effect by using an small example with n 4. a) (5 marks) void f_a(int n, int a[n] [n], int b [n] [n]) [ int i, j; for (i-0; i a[n-1]) return a[n-1] else return m