Which two statements about the RC4 algorithm are true? (Choose two.)

A.
The RC4 algorithm is an asymmetric key algorithm.

B.
In the RC4 algorithm, the 40-bit key represents four characters of ASCII code.

C.
The RC4 algorithm is faster in computation than DES.

D.
The RC4 algorithm uses variable-length keys.

E.
The RC4 algorithm cannot be used with wireless encryption protocols.