This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Classification of carbohydrate, Subject name: Biochemistry
[{'content': 'Dextrose is: \nSelect and explain. \nA. D (+) glucose, B. D (-) glucose, C. L (+) glucose, D. L (-) glucose', 'role': 'user'}, {'content': "Answer: A \nExplanation: Option a - Dextrose is D(+) glucose Concept 'D' means structural isomer i.e. Enantiomer. Abundant form of carbohydrate is always D form. (+) or (d) means dextrorotatory. Glucose is always dextrorotatory (d) (+). The solution of glucose is known as DEXTROSE. Therefore, Dextrose is D (+) glucose", 'role': 'assistant'}]