The number of sides of two regular polygons are in the ratio 5 : 4. The difference between their interior angles is 9°. Consider the following statements:1) One of them is pentagon and the other is a rectangle.2) One of them is decagon and the other is an octagon.3) The sum of their exterior angles is 720°.Which of the above statements is/are correct?

• A. 1 only
• B. 2 only
• C. 1 and 3
• D. 2 and 3