A 23-year-old Caucasian woman presents to the clinic with odd chest pain and palpitations. Her past medical history is significant for Marfan syndrome. On physical exam, you note her marfanoid body...

A 23-year-old Caucasian woman presents to the clinic with odd chest pain and palpitations. Her past medical history is significant for Marfan syndrome. On physical exam, you note her marfanoid body habitus (tall thin stature, with slender long fingers) and chest auscultation reveals a late systolic murmur and mid-systolic click. What valvular defect do you suspect?

A. Aortic stenosis

B. Mitral insufficiency

C. Mitral valve prolapse

D. Infective endocarditis