Given below are four statements (i)-(iv). Which two of the following statements are correct ?
(i) It is estimated that more than 70 percent of the world livestock population is in India and China.
(ii) Stringent cleanliness and hygiene (both of the cattle and the handless) are of paramount importance while milking, storage and transport of the milk and products.
(iii) Out-breeding is the breeding between animals of the same breed only.
(iv) Corsses between different breeds is called inbreeding.

Options

A. (i) and (ii)
B. (ii) and (iv)
C. (i) and (iv)
D. (ii) and (iii)

Explanation

To determine which two statements are correct from the given options, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Analyze Statement (i)**:
- The statement claims that more than 70 percent of the world livestock population is in India and China.
- This statement is correct. India and China indeed have a significant portion of the world's livestock population.

2. **Analyze Statement (ii)**:
- This statement emphasizes the importance of cleanliness and hygiene in the milking process, storage, and transport of milk and dairy products.
- This statement is also correct. Maintaining hygiene is crucial to prevent contamination and ensure the quality of milk.

3. **Analyze Statement (iii)**:
- The statement suggests that out-breeding occurs between animals of the same breed only.
- This statement is incorrect. Out-breeding refers to breeding between different breeds, not the same breed.

4. **Analyze Statement (iv)**:
- This statement claims that crosses between different breeds are called inbreeding.
- This statement is incorrect. Inbreeding refers to breeding within the same breed, while crosses between different breeds are referred to as crossbreeding.

### Conclusion:
- The correct statements are (i) and (ii).

### Final Answer:
The two correct statements are:
- (i) It is estimated that more than 70 percent of the world livestock population is in India and China.
- (ii) Stringent cleanliness and hygiene (both of the cattle and the handlers) are of paramount importance while milking, storage, and transport of the milk and products.

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