Answer:
The correct answer is option b.
Step-by-step explanation:
An increase in the supply of a product will cause the supply curve to shift to the right. This rightward shift in the supply curve will cause a decrease in the price level.
A decrease in the price level will cause the total revenue to decline if the demand curve is inelastic.
With an inelastic demand curve, a decrease in price will cause a less than proportionate increase in the quantity demanded. So the total revenue will decline.
An elastic demand curve, on the other hand, will increase the total revenue by causing a more than proportionate increase in the quantity demanded.