In a large organization, defining recovery time objectives (RTOs) is PRIMARILY the responsibility of: A. the IT manager. B. the information security manager. C. the business unit manager. D. senior manager. Correct Answer: A???? or C????? or D??????

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Note

The official answer is "D. senior manager." (but it could also be wrong because it is not certified by ISACA)

Other experts claim that the correct answer is: "C. the business unit manager."

For policy CHEGG I cannot write link....but in OFFICIAL IBM WEB SITE I found this: "RTOs first need to be aligned with whats possible by your IT department. IT administrators need a strong comprehension of the different type of restore speeds to calculate an RTO that meets the needs of the business.For example, an RTO of one hour cant be met if the minimum possible restore time is two hours. ", So it "ALSO" possible that the correct answer is: "A. the IT manager."

PLEASE REPLY "ONLY" IF YOU ARE SURE NOT IF YOU "SUPPOSE". Many thanks in advance.

Many thanks!