A consumer buys a product from a retailer for $$5\mathrm{.}00.$ The retailer buys the product from the wholesaler for $$3\mathrm{.}00.$ If the wholesaler raises their price by $$1\mathrm{.}00,$ what should the retailer charge to maintain their percentage margin? Question $7$ options: $$7\mathrm{.}00.$ $$6\mathrm{.}40.$ $$4\mathrm{.}40.$ $$6\mathrm{.}00.$ $$6\mathrm{.}67.$