Which of the following should be used when a business needs a block cipher with minimal key size for internal
encryption?

A.
AES

B.
Blowfish

C.
RC5

D.
3DES

Explanation:
Blowfish is an encryption system invented by a team led by Bruce Schneier that performs a 64-bit block cipher
at very fast speeds. It is a symmetric block cipher that can use variable-length keys (from 32 bits to 448 bits).