Assume Jordan's budget constraint is represented in the graph. If Jordan's income is $$18,$ what are the prices of these two goods?

Multiple Choice

A protein bar costs $$3$ and a bagel costs $$2.$

A protein bar costs $$4$ and a bagel costs $$3.$

A protein bar costs $$12$ and a bagel costs $$9.$

A protein bar costs $$6$ and a bagel costs $$3.$