In the two lists given below, in List I specific categories of causes of mental retardation are given while List II describes the causes. Match the two lists and choose the correct answer from the code given below. List I (Category) List II(Causes)(a) Post-natal causes (i) Chromosomal abnormality (b) Pre-natal causes(ii) Anoxia and Asphyxia(c) Perinatal causes(iii) Malnutrition and poor medical care (iv) Psychiatric disorders

• A. (a) - (iv), (b) - (ii), (c) - (iii)
• B. (a) - (iii), (b) - (i), (c) - (ii)
• C. (a) - (ii), (b) - (i), (c) - (iii)
• D. (a) - (iii), (b) - (ii), (c) - (iv)