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: Gynaecology & Obstetrics
[{'content': 'Greenish vaginal discharge with severe Itching points to a diagnosis of : \nSelect and explain. \nA. Senile vaginitis, B. Candidiasis, C. Trichomoniasis, D. Pyogenic vaginitis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Trichomoniasis', 'role': 'assistant'}]