You’ve been hired by Charlie Sweets to perform a security audit of their login system. After reviewing the following code, what recommendations would best improve the security of their system? (Choose three.) 

A. Mark the check() method final on line 2.

B. Remove the null check on line 7.

C. Rewrite to not use var on lines 6, 8, and 9, as it is inherently unsafe.

D. Rewrite to use readPassword() on line 8.

E. Rewrite to use readPassword() on line 9.

F. Change or remove line 10.

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1: public class CandyFactory { 2: 3: 4: 5: 6: 7: 8: 9: 10: 11: 12: 13: 14: 24 boolean check (String username, String password) { // IMPLEMENTATION OMITTED } public void login () { var c= System.console(); if (c != null) { var username = c.readLine("Username: "); var password = c.readLine("Password: "); System.out.println("["+username+","+password+"]"); System.out.println (check (username, password) ? "Here is your candy" : "No candy for you"); } } }