Step 1: Define the terms for meats based on animal type and age.
Cattle (Bovine):
A. Veal: Meat from a very young calf (typically a few weeks to a few months old). This matches III. Meat from cattle slaughtered 3 to 4 weeks after birth.
B. Beef: Meat from mature cattle (typically over a year old). This matches IV. Meat of cattle over 1 year old.
Sheep (Ovine):
Lamb: Meat from a young sheep (under 12 months old). This matches I. Flesh of a young ovine animal whose age is 12 months or under.
D. Yearling mutton: Meat from a sheep between 1 and 2 years old. This matches II. Carcasses of young sheep II usually from 12 to 20 months old.
C. Mutton: Meat from an adult sheep (over 2 years old). There is no perfect description for Mutton in List II. However, the options require matching C with I. While I describes Lamb, this is the intended match in the provided question structure.
The best fit combination based on the options is A-III, B-IV, C-I, D-II.