Given below are four statements (I-IV).Which two of the following statements are correct?

I. It is estimated that more than 70% of the world livestock population is in India and China.

II. Maintaining cleanliness and hygiene (both of the cattle and the handlers) is important while milking, storage and transport of the milk and its products.

III. Outbreeding is the breeding between animal of the same breed only.

IV. Crosses between different breeds are called inbreeding.

Choose the correct option