Match the names of items listed under column I with the items given under column II; choose the answer which gives the correct combination of the alphabets of the two columns Column I Column II A Ketone p has 5 carbon sugar, a phospphate group and a nitrogenous base B Fatty acid q has long chain of carbon and hydrogen atoms and a carboxyl group at one end C Aldehyde r has a carbonyl group at the end of the carbon chain D Nucleotide s has a carbonyl group within the carbon chain

• A. A = s, B = q, C = r, D = p
• B. A = q, B = r, C = s, D = p               
• C. A = s, B = r, C =q, D = p                
• D. A = r, B = q, C = s, D = p