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).