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
Gradenigo's syndrome is characterised by -a) Retro orbital painb) Profuse discharge from the earc) VII nerve palsyd) Diplopia 
Select and explain. 
A. abd, B. bcd, C. abc, D. ab
A: abd
Answer: A: abd 
Explanation: None