Used with the ToString function, the ____ format specifier will display the value 8976.43561 as 8976.44.

Which of the following statements creates a class that is extended from the JFrame class?

A) JFrame DerivedClass = new JFrame(); B) class JFrame DerivedClass; C) JFrame(DerivedClass); D) public class DerivedClass extends JFrame{}

What happens after line 4 is run?

``` 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 y is space. B. The value of y is i. C. The program will not compile. D. The program crashes when it runs.