The correct option is
B Good milk producing cows.
Indigenous breeds are classified under three groups based on utility/purpose -
a) Milch breeds / Milk breeds;
b) Dual purpose breeds;
c) Draught breeds.
Milch breeds are the cows those have high milk yields and the male animals are slow or poor work animals. The examples of Indian milch breeds are Sahiwal, Red Sindhi, Gir and Deoni. The milk production of milk breeds is on the average more than 1600 kg per lactation.
Therefore, the correct answer is option B.