You are writing a referral letter to a cardiologist for a patient with suspected unstable angina. Which of the following pieces of information is MOST crucial to include in the opening paragraph?
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A
The patient's detailed social history, including their marital status and occupation.
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B
A list of all medications the patient is currently taking for unrelated chronic conditions.
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C
A clear statement that you are referring the patient for urgent assessment due to suspected unstable angina.
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D
The patient's family history of cardiovascular disease spanning three generations.