Answer:
The total revenue for barley producers will increase because the price effect is greater than the quantity effect.
Correct option is D. increase; price; quantity
Step-by-step explanation:
Price effect (which is the impact that a change has on prices) in the scenario above is greater than Quantity effect (a reduction in commodities sold after an increase in price).
Since breweries still buy below the percentage of the Price effect, the revenue of barley sellers will continue to increase.
However, the revenue will start to decrease when the quantity effect exceeds the price effect.