Match column-I with column-II and select the correct option from the codes given below. Column-I Column-II A. Autosomal recessive trait I. Down?s syndrome B. Sex-linked recessive trait II. Phenylketonuria C. Metabolic error linked to autosomal recessive trait III. Haemophilia D. Additional 21st chromosome IV. Sickle cell anaemia

• A. A-II;    B-I;   C-IV;   D-III
• B. A-IV;   B-I;   C-II;    D-III
• C. A-IV;   B-III; C-II;    D-I
• D. A-III;   B-IV; C-I;     D-II