SCJP Questions

Which gets the name of the parent directory file "file.txt"?
A. String name= File.getParentName("file.txt");
B. String name= (new File("file.txt")).getParent();
C. String name = (new File("file.txt")).getParentName();
D. String name= (new File("file.txt")).getParentFile();
E. Directory dir=(new File ("file.txt")).getParentDir();
String name= dir.getName();
Answer: B