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The correct option is (C)
all of them are good controls. however c. is the most relevant and important application control.
Option C
Because data encryption Si easily breached if the encryption software of the type complex either protection system through the entry permit is useful somewhat, but a breakthrough is faster than the encryption system by special methods used by the hacker easy access easily to the site without passing the permit system them to enter or not remains regularity best for the safety and privacy of encryption programs
I think option (c) is correct answer.
Option C could be the answer - I guess
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