Plz explain how its answer is calculated

#1

Q15. bitmask output3
int a = 20, b = 2, c = 3, d = 1;
cout << ( a>>b&c+d ) << endl;
What will be the output of the above code?

5

2

4

11

#2

Ans: 4

how
(a >> b ) & ( c+d)

(20 >>2 ) & ( 4)
10 & 4
-> 4