Consider the following method.

public void doSomething()
{
System.out.println("Something has been done");
}

Each of the following statements appears in a method in the same class as doSomething. Which of the following statements are valid uses of the method doSomething ?

doSomething();
String output = doSomething();
System.out.println(doSomething());

A: I only
B: II only
C: I and II only
D: I and III only
E: I, II, and III