Step 1: Identify fat-rich dairy products.
- These products primarily consist of fat. - Examples include Butter and Ghee.
Step 2: Evaluate provided items.
- Butter (A): Predominantly milk fat (approx. 80%). Classified as fat-rich.
- Khoa (B): Composed of concentrated milk solids, rich in proteins and carbohydrates, not primarily fat-rich.
- Ghee (C): Clarified butter, composed of almost 100% fat. Classified as fat-rich.
- Kulfi (D): A frozen dessert made with milk, sugar, and flavorings. It contains some fat but is not categorized as a fat-rich product.
Step 3: Determine exclusion.
Khoa and Kulfi are not considered fat-rich milk products.
Final Answer: \[\boxed{\text{Khoa (B) and Kulfi (D) are excluded as fat-rich milk products.}}\]