ANSI X9.17 is concerned primarily with

A.
Protection and secrecy of keys

B.
Financial records and retention of encrypted data

C.
Formalizing a key hierarchy

D.
Th e lifespan of key-encrypting keys (KKMs)

Explanation:
A: Protection and secrecy of keys is the primary concern of ANSI 9.17. ANSI X9.17 was developed to address the need of financial institutions to transmit securities and funds securely using an electronic medium. Specifically, it describes the means to ensure the secrecy of keys. Page 382.