What is the expected result of calling deleteTree() on a directory? Assume the directory exists and is able to be modified. 

A. It will delete the directory itself only.

B. It will delete the directory and its file contents only.

C. It will delete the entire directory tree.

D. The code does not compile.

E. The code compiles but produces an exception at runtime.

F. None of the above.

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import java.nio.file.*; public class Exterminate { public void deleteTree (Path q) { if (!Files.isDirectory (q)) Files.delete (q); else { Files.list (q).forEach(this::deleteTree); Files.delete (q); } } }