Which of the following statements are true?
◦ If a directory (e.g., c:\liang) does not exist, new File("c:\liang") creates a new directory named c:\liang.
◦ If a directory (e.g., c:\liang) does not exist, new File("c:\liang") returns null.
◦ If a file (e.g., c:\temp.txt) does not exist, new File("c:\\temp.txt") creates a new file named c:\temp.txt.
◦ If a file (e.g., c:\temp.txt) does not exist, new File("c:\\temp.txt") returns null.
◦ None of the above.