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
Lady has B/L hearing loss since 4 years which worsened during pregnancy. Type of impedence auditometry graph will be - 
Select and explain. 
A. Ad, B. As, C. B, D. C
B: As
Answer: B: As 
Explanation: None