This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
Chondritis of aural cailage is most commonly due to which of the following? 
Select and explain. 
A. Staphylococcus, B. Pseudomonas, C. Candida, D. Both staphylococcus and Pseudomonas
B: Pseudomonas
Answer: B: Pseudomonas 
Explanation: Perichondritis results from infection secondary to lacerations, haematoma or surgical incisions. It can also result from the extension of infection from diffuse otitis externa or a furuncle of the meatus. Pseudomonas and mixed flora are common pathogens. (Ref: Textbook of ENT, PL Dhingra, 7th edition, pg no. 53)