Which of the following statements is false?

a. The javac command can compile multiple classes at once; simply list the source-code filenames after the command with each filename separated by a comma from the next.
b. If the directory containing the app includes only one app’s files, you can compile all of its classes with the command javac *.java.
c. The asterisk (*) in javac *.java indicates that all files in the current directory ending with the filename extension “.java” should be compiled.
d. All of the above are true.

a. The javac command can compile multiple classes at once; simply list the source-code filenames after the command with each filename separated by a comma from the next.