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
Heamorrhagic external otitis media is caused by: 
Select and explain. 
A. Influenza, B. Proteus, C. Staphylococcus, D. Streptococcus
A: Influenza
Answer: A: Influenza 
Explanation: Hemorrhagic external otitis media: (Otitis externa hemorrhagia) is caused by influenza virus. Characterised by formation of haemorrhagic bullae on tympanic membrane. Clinical features: severe pain and blood stained discharge. Treatment: Analgesics + antibiotics.