Rosie' cow known to produce a type of milk which has all the following characteristics
I) protein content of 2.4 mg/L.
II) human a-lactalbumin.
III) more nutritionally balanced for human babies than natural cow milk.
Which of the above statements are correct?

Options

A. I and II
B. I and III
C. II and III
D. I, II and III

Answer

To determine which statements about Rosie the cow's milk are correct, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Analyzing Statement I**:
- The statement claims that the protein content of the milk is 2.4 mg/L.
- This is a very low protein content for milk, which typically has a higher protein concentration. However, it is important to note that the question might be referring to a specific type of milk or a specific measurement.
- In general, cow's milk has a protein content of about 3.2 g/L (or 3200 mg/L), so 2.4 mg/L seems incorrect for typical milk.
- **Conclusion**: This statement is likely incorrect.

2. **Analyzing Statement II**:
- The statement claims that the milk contains human alpha-lactalbumin.
- Rosie the cow was genetically engineered to produce milk that contains this specific human protein, which is beneficial for human consumption.
- **Conclusion**: This statement is correct.

3. **Analyzing Statement III**:
- The statement claims that the milk is more nutritionally balanced for human babies than natural cow milk.
- Given that the milk contains human alpha-lactalbumin, it is designed to be more suitable for human infants, making it easier for them to digest compared to regular cow's milk, which can be harder for babies to digest.
- **Conclusion**: This statement is also correct.

### Final Conclusion:
- From the analysis, we find that:
- Statement I: Incorrect
- Statement II: Correct
- Statement III: Correct

Thus, the correct statements are II and III.