What is the output of the following program? #include 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. 300
• B. 150
• C. 100
• D. 200