. What is the output of the following C++ code?

int myfunction ( int arr[], int s, int e, intc){

int y = 0; int i;

if ((s>e) || (s<0)|| (e<0)) {return -1;}

for (i=s; i<=e; i++);

if (arr[i] == c) {

y++;

}

return y;

}

int main(){

int x[10] = {9, 4, 9, 1, 2, 3, 9, 8, 11, 15};

cout << myfunction (x, 1, 6, 9) << endl;

return 0;

}

a. -1

b. 1

c. 2

d. 10

Note : Please provide a solution