What is the output of the program?
#include
int main()
{
string s1=”Wo”; string s2; s2 = s1; string s3; s3 = s2.append(“rldHello”); cout << s3; return( 0 ); }
A. It prints: WorldHello
B. It prints: HelloWo
C. It prints: World
D. It prints: Hello