162. A new murmur is identified in the aortic area in a 45-year-old male. He doesn't have any history suggestive of rheumatic fever however a few years ago he developed a painless ulcer on penis which healed on its own after a few weeks. Imaging shows aortic root dilation. Which of the following pathogenesis is leading to this manifestation? a. obliterative end arteritis b. Syphilitic cardiomyopathy c. Type II hypersensitivity reaction d. inflammation induced collagen degradation