Suppose that Cheddars is currently selling 500 Chicken and Oriental salads for $5. Suppose that the own-price elasticity for this product is -0.8. If Cheddars wishes to lower the price to $4, you predict that, all other factors held constant, the number of Chicken and Oriental salads sold at this price will be

• 420.

• 580.

• 600.

• Can't tell; insufficient information.