As the CISO, You Have Been Tasked with the Execution

As the CISO, you have been tasked with the execution of the company's key management program. You MUST ensure the integrity of encryption keys at the point of generation. Which principal of encryption key control will ensure no single individual can constitute or re-constitute a key?

A) Dual Control
B) Separation of Duties
C) Split Knowledge
D) Least Privilege