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: Medicine
The plain X-ray chest finding which suggests syphilitic cardiovascular disease is: 
Select and explain. 
A. Linear calcification of the ascending aoa, B. Linear calcification of the aoic arch, C. Speckled calcification of the ascending aoa, D. Speckled calcification of the aoic arch
A: Linear calcification of the ascending aoa
Answer: A: Linear calcification of the ascending aoa 
Explanation: X-Ray Films showing linear calcification of the ascending aoa suggests asymptomatic syphilitic aoitis. Aeriosclerosis seldom produces this type of calcification in ascending aoa Ref: Harrison, E-18, P-1384