Acompany implements a security policy that ensures that a file sent from the headquarters office to the branch office can only be opened with a predetermined code. this code is changed every day. which two algorithms can be used to achieve this task? (a) sha-1(b) aes(c) 3des(d) hmac(e) md5

Which of the following statements is false? a. a class can directly inherit from class object. b. if the class you're inheriting from declares instance variables as private, the inherited class can access those instance variables directly. c. a class's instance variables are normally declared private to enforce good software engineering. d. it's often much more efficient to create a class by inheriting from a similar class than to create the class by writing every line of code the new class requires.