Afruit stand sells bananas by the pound. the sign at the fruit stand states "2 pounds for $5.00."

sam said, "the ratio of the number of dollars to the number of pounds is 5: 2. the cost of the bananas is $2.50 per pound."

maria said, "the ratio of the number of pounds to the number of dollars is 2: 5. that is 0.40 pounds per dollar."

which student(s) made a correct statement?