Which of the following situation reflects a one-price policy? (Select all that apply.) Price deviations are not allowed. Artwork, antiques, and used cars are typically sold using this policy. Product

Which of the following situation reflects a one-price policy? (Select all that apply.)
Price deviations are not allowed.
Artwork, antiques, and used cars are typically sold using this policy.
Product prices are advertised on clearly marked signs.
The buyer negotiated a lower price than he was initially quoted.
This policy allows the seller to closely calculate profits