What is the output of the program?

exams CPA-21-02 V1 CPA-21-02 exam 0 Comments

What is the output of the program?

#include <iostream>

#include <string>

using namespace std;

int main () {

string s1 = "Hello", s2 = "World";

s2 = s1 + s2;

cout << s2;

return 0;

}
A . It prints: Hello
B . It prints: HelloWorld
C . It prints: WorldHello
D . It prints: WorldHelloWorld