Which of the following best completes the following sentence: A rule out diagnosis is…

A. …a diagnosis intended to do one of two things: either prove that a specific diagnosis is the definitive diagnosis through diagnostic testing, data, and findings, or dismiss it from any future consideration as the final diagnosis of the presenting problem
B. …an undiagnosed new presenting problem that requires specific laboratory, pathology, or other diagnostic tests to identify the differential diagnosis
C. …a diagnosis that is intended to either prove that a specific diagnosis or dismiss a specific diagnosis from any future consideration
D. …a diagnosis that is considered to be very plausible by the physician because of the findings, data, and information gathered about the presenting problem and the patient

A