In his spare time, Bernie is selling hand-made scarves on Etsy. The scarves are currently priced at $40 each. Bernie is not happy with his current revenue stream and asks Supriya for advice. Supriya estimates that the demand for Bernie's scarves is: Q = 400 - 5P. If Bernie is looking to maximize revenue, what should Supriya's recommendation be? Group of answer choices Keep prices at $40/scarf Raise prices to $50/scarf Lower price to $20/scarf Lower price to $25/scarf Raise prices to $80/scarf