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
Tobe Ayer's Test is seen in ? 
Select and explain. 
A. Acute mastoiditis with lateral sinus thrombosis, B. Maxillary cancer with spread to nasal cavity, C. Rhinosporidiosis, D. Jugular vein thrombosis
A: Acute mastoiditis with lateral sinus thrombosis
Answer: A: Acute mastoiditis with lateral sinus thrombosis 
Explanation: Ans' is'a'i.e., Acute mastoiditis with lateral sinus thrombosis