Based on the function defined below, what is the value of z(6,8)?

int z(int k, int n)

{

if (n == k)

return k

else

{

if (n > k)

return z(k, n-k);

else return z(k-n, n);

}

}

[1] 1

[2] 2

[3] 3

[4] 4