Liz is selling novelty hats on Etsy. The hats are currently priced at $25/hat. Liz is not happy with her current revenue stream and asks Brad for advice. Brad estimates that the demand Liz's hats is: Q = 500 - 10P (P = 50 - 0.1Q). If Liz is looking to maximize revenue, what should Brad's recommendation be?

Group of answer choices

Keep prices at $25/shirt

Raise price to $50/shirt

Lower price to $12.50/shirt

Lower price to $10/shirt

Raise prices to $40/shirt