This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET Jan 2020, Subject name: Pathology
A 25-year-old man presents for a routine physical examination. The patient is tall (6 ft. 5 in) and on examination he was found to have an early diastolic murmur. His family pedigree is as given below. Which of the following is the mode of inheritance by which the disease is likely to be transmitted? 
Select and explain. 
A. Autosomal dominant, B. Autosomal recessive, C. X-linked recessive, D. X linked dominant disorder
A: Autosomal dominant
Answer: A: Autosomal dominant 
Explanation: Autosomal dominant Males and females are both affected (no sex predilection). Upto 50% of offsprings have chance of inheritance of disease, depending on disease penetrance. Affected male in 1st generation has passed disease gene to nearly half of his offsprings and so foh.