This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hypeension, Subject name: Medicine
A 68 -year-old male, known case of HTN is brought unconscious. Upon arrival, the patient is found to have a Blood Pressure of 245/142. You decide to assess the patient for end-organ damage. Which of the following investigations would be least useful? 
Select and explain. 
A. Serum Creatinine, B. CT pulmonary angiogram, C. 12-lead ECG, D. Fundoscopy
B: CT pulmonary angiogram
Answer: B: CT pulmonary angiogram 
Explanation: Option A: S. creatinine use to assess kidney damage Option B: CT pulmonary Angiogram not useful which is done in Pulmonary sequestration or in P.E Option C: 12-Lead ECG=LVH Option D: Fundoscopy=Papilledema