Which code fragment correctly appends "Java 7" to the end of the file /tmp/msg.txt?

Which code fragment correctly appends “Java 7” to the end of the file /tmp/msg.txt?

A.
FileWriter w = new FileWriter(“/tmp/msg.txt”);
append(“Java 7”);
close();

B.
FileWriter w = new FileWriter(“/tmp/msg.txt”, true);
append(“Java 7”);
close();

C.
FileWriter w = new FileWriter(“/tmp/msg.txt”, FileWriter.MODE_APPEND);
append(“Java 7”);
close();

D.
FileWriter w = new FileWriter(“/tmp/msg.txt”, Writer.MODE_APPEND);
append(“Java 7”);
close();

Explanation:

FileWriter(File file, boolean append)
A: clears the file and append “Java7”
Constructs a FileWriter object given a File object.
If the second argument is true, then bytes will be written to the end of the file rather than the
beginning.Parameters:
file – a File object to write toappend – if true, then bytes will be written to the end of the file rather
than the beginning