This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Social science, Mental health & Genetics, Subject name: Social & Preventive Medicine
[{'content': 'Reading and retarding skills of a moderate mentally retarded child? \nSelect and explain. \nA. Reasonable, B. Basic, C. Minimal, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: LEARNING DISABILITY: Mild disability Moderate disability Severe profound disability IQ level 69-50 49-35 <35 % of cases 85% 10% 5% Self-care Independent Need some help Limited Language Reasonable Limited Basic/None Reading & Writing Reasonable Basic Minimal/None Ability to work Semi-skilled Unskilled, supervised Basic tasks, supervised Social skills Normal Moderate Few Physical Problems Rare Sometimes Common Aetiology discovery Sometimes Often Usual Ref: Psychiatry by Harrison 10th edition table 17.2', 'role': 'assistant'}]