Which two statements are correct regarding the AES encryption algorithm? (Choose two.) 

Answer options:

A. It is a FIPS-approved symmetric block cipher.
B. It supports a block size of 128, 192, or 256 bits.
C. It supports a variable length block size from 16 to 448 bits.
D. It supports a cipher key size of 128, 192, or 256 bits.
E. The AES encryption algorithm is based on the presumed difficulty of factoring large integers.

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