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: Ophthalmology
[{'content': 'Which of the following organism can penetrate the normal cornea –a) Gonococcusb)  Pseudomonasc) Diphtheriad) Streptococcuse) Staphylococcus epidermidis \nSelect and explain. \nA. a, B. bc, C. ad, D. ac', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The organisms which can penetrate intact corneal epithelium are Neisseria gonorrhoea, Haemophilus Aegyptus, Corynebacterium diphtheriae, Listeria species and Neisseria meningitides.', 'role': 'assistant'}]