What happens when you attempt to compile and run the following code?

What happens when you attempt to compile and run the following code?
#include using namespace std; void set(struct person*);
struct person
{ int age;
};
int main()
{
struct person e = {18}; set(&e); cout<< e.age; return 0; } void set(struct person *p) { p?>age = p?>age + 1;
A. It prints: 18
B. It prints: 19
C. It prints: 20
D. It prints: 0

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