This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
In which of the following locations would you least except to find significant atherosclerotic lesions in a patient with risky factors of smoking, hypeension, diabetes mellitus, and serum cholesterol level of 280 mg/dl - 
Select and explain. 
A. Left main coronary aery, B. Left main coronary aery, C. Circle of Willis, D. Pulmonary aery trunk
D: Pulmonary aery trunk
Answer: D: Pulmonary aery trunk 
Explanation: Ans. is 'd' i.e., Pulmonary trunk o Atherosclerosis usually involves Abdominal aoa (M.C.), coronary aeries, popliteal aeries, ICA, circle of willis.