What change, if any, should be made to the following method to improve security? 

A. On line 10, the method should be marked private.

B. On line 15, an ArrayList instance should be returned instead of an unmodifiable list.

C. Prior to line 16, the fileName should be validated against a list of constants.

D. The exception on line 18 should be removed and an empty List should be returned.

E. None of the above, as the code is safe as is.

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10: public List accessNetwork List (String fileName) { return AccessController.doPrivileged ( 11: 12: 13: 14: 15: 16: 17: 18: 19: 20: } new Privileged Action () { public List run () { try { return Collections. unmodifiableList( Files.readAllLines (Path.of (fileName))); } catch (IOException e) { throw new Security Exception ("No access"); } } });