Pravat used parking cones to set up a rectangular football field in the park. However, when his friend Brian arrived at the park, he told Pravat that they should dilate the field by ¼. Which best describes the changes that Brendan and Poorav will make to the side lengths and interior angles of the football field?

a. Both the side lengths and the interior angles will change.
b. The interior angles will change, but the side lengths will remain the same.
c. The interior angles will remain the same, but the side lengths will change.
d. Neither interior angles nor side lengths will change.