What happens at line 2?

Question

The next set of questions refer to the following code. Assume all includes are
correct. The line numbers are for reference only.


1.
```
string s = “math is fun!”;
```

2.
```
int f = s.at(0)
```

3.
```
int t = s.size();
```

4.
```
int n = s.at(5);
```

5.
```
int y = s.at(s.5);
```

A. The value of f is m.
B. The value of f is [] (empty set).
C. The program will not compile.
D. The program crashes when it runs.

Answer 1

A. The value of f is m.