Which three statements about triple DES are true? (Choose three.) 

Answer options:

A. For 3DES, ANSI X9.52 describes three options for the selection of the keys in a bundle, where all keys are independent.
B. A 3DES key bundle is 192 bits long.
C. A 3DES keyspace is168 bits.
D. CBC, 64-bit CFB, OFB, and CTR are modes of 3DES.
E. 3DES involves encrypting a 64-bit block of plaintext with the 3 keys of the key bundle.

BCD