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: ENT
Which is the most common type of congenital ossicular dysfunction? 
Select and explain. 
A. Isolated stapes defect, B. Stapes defect with fixation of footplate and lenticular process involvement., C. Defective lenticular process of incus, D. None of the above.
B: Stapes defect with fixation of footplate and lenticular process involvement.
Answer: B: Stapes defect with fixation of footplate and lenticular process involvement. 
Explanation: Ans: B. Stapes defect with fixation of footplate and lenticular process involvement.(Ref Nelson 20/e p3071)Most common type of congenital ossicular dysfunction is stapes defect with fixation of footplate and lenticular process involvement.