The triangular region shows the number of possible ounces of pepperoni slices, x, and the number of possible ham slices, y, a pizza maker can use on a special pizza. Which combination of pepperoni and ham can the pizza maker use?

33 pepperoni slices and 15 ham slices

43 pepperoni slices and 25 ham slices

38 pepperoni slices and 30 ham slices

25 pepperoni slices and 20 ham slices