Step 1: Understanding the Concept:
Milk composition varies among species.
Lactose content differs significantly.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the lactose content of different milks.
Step 3: Detailed Explanation:
Lactose content:
Cow milk: 4.5\%
Human milk: 7.0\%
Donkey milk: 7.4\%
Thus, the order is 4.5; 7.0; 7.4.
Step 4: Final Answer:
The correct order is 4.5; 7.0; 7.4.
Hence, the correct option is (A).
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