According to the material, a $30 bottle may contain only what percent of the top-quality grapes?

• A. 50%
• B. 20%
• C. 70%
• D. 0%

Answer: (B)

The question tests blending rules tied to price points. In this framework, a bottle priced at $30 can include only a limited share of top-quality (premium) grapes to balance cost and perceived quality. The material sets that limit at 20%, meaning up to one-fifth of the grapes in the bottle can be top-quality. The rest come from other, lower-cost sources to keep the price point attainable.

Why this fits best: 20% aligns with the idea of offering a touch of premium fruit to convey quality while keeping the overall cost reasonable for a $30 bottle. Using 50% or 70% top-quality grapes would push the wine into a higher price tier, and 0% would imply no top-quality fruit at all, which contradicts the notion of including some premium character at this price.