Which of the following code snippets DO NOT write the exact content of the file "source.txt" to "target.txt"? (Choose 2)
A. file_put_contents("target.txt", fopen("source.txt", "r"));
B. file_put_contents("target.txt", readfile("source.txt"));
C. file_put_contents("target.txt", join(file("source.txt"), "n"));
D. file_put_contents("target.txt", file_get_contents("source.txt"));
E: $handle = fopen("target.txt", "w+"); fwrite($handle, file_get_contents("source.txt")); fclose($handle);