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.$