⟩ What is the output of this program? #include <iostream> using namespace std; class base { int val1, val2; public int get() { val1 = 100; val2 = 300; } friend float mean(base ob); }; float mean(base ob) { return float(ob.val1 + ob.val2) / 2; } int main() { base obj; obj.get(); cout << mean(obj); return 0; } a) 200 b) 150 c) 100 d) 300