Class Circle has a double getRadius$()$ method. Which one is valid?The program compiles fine, but it has a runtime error because c has not yet been instantiated when the println statement is executed.

The program has a compilation error in the println statement where $c$ may not be defined.

method$2$ should be declared before method$1,$ since method$2$ is invoked from method$1.$

Variable $c$ must be declared in method$2,$ since $c$ is used in method$2.$

method$1$ cannot be called in the main method.