This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
A 25 yr old man presents for a routine examination The patient is tall and on examination was found to have an early diastolic murmur Family pedigree given what is the mode of inheritance of the disease in this patient 
Select and explain. 
A. AD, B. AR, C. XLD, D. XLR
A: AD
Answer: A: AD 
Explanation: HISTORY SUGGESTIVE OF MARFANS SYNDROME . WHICH IS AD. REF : ROBBINS 10TH ED