Suppose You Are at an Operating System Command Line, and You

Multiple Choice

Suppose you are at an operating system command line, and you are going to use the following command to compile a program:
javac MyClass.java
Before entering the command, you must

A) close all other Windows on your computer system.
B) make sure you are in the same directory or folder where the MyClass.java file is located.
C) execute the java.sun.com program.
D) save the program with the .comp extension.