This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Toxicology, Subject name: Medicine
[{'content': "16F Foley's color: \nSelect and explain. \nA. Orange, B. Yellow, C. Blue, D. Black", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. A. OrangeColor Code of Foley's CatherSizeColorSizeColor6FLight green20FYellow8FLight blue22FViolet10FBlack24FBlue12FWhite26FCream14FGreen28FOlive green16FOrange30FGrey18FRed32FBrown", 'role': 'assistant'}]