Concept:HCF of fractions = HCF of numerators ÷ LCM of denominators.Explanation:List the fractions: 3314, 2221, 5542.Find HCF of numerators 14, 21, 42. The HCF is 7.Find LCM of denominators 33, 22, 55. The LCM is 330.Thus, the required HCF = 3307.Answer:A. 3307