Which description of the AES encryption algorithm is true?

Which description of the AES encryption algorithm is true?
A . It provides only data integrity
B . Theoretically 3DES is more secure than AES
C . Reapplying the same encryption key three times makes rt less vulnerable than 3DES
D . It does not use the substitution and permutation principle
E . It uses three encryption keys of lengths 126.192 and 256
F . It uses the block of 128 bits

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Answer: F