You are the business analyst for your organization and are working with Ralph who is also a business analyst at your com

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You are the business analyst for your organization and are working with Ralph who is also a business analyst at your company. You have moved one of the requirements higher in the prioritization of the requirements because it is needed to be implemented before some of the more important requirements are done.
Ralph disagrees with your placement of the requirement because you are to rank the requirements based on their level of difficulty.
Who is correct and why?

A. Ralph is correct because the requirements are always to be ranked by importance or business value.
B. You are correct because the lower priority requirements must be completed before the higher priority requirements can be done.
C. You are correct because you are the senior business analyst.
D. Ralph is correct because the sequence of requirements is actually done with the project activity list.