Which two descriptions of AES encryption are true? (Choose two)

Which two descriptions of AES encryption are true? (Choose two)
A . AES is less secure than 3DES.
B . AES is more secure than 3DES.
C . AES can use a 168-bit key for encryption.
D . AES can use a 256-bit key for encryption.
E . AES encrypts and decrypts a key three times in sequence.

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Answer: B, D