Earth and the Moon Both Move Eastward in Their Orbits

Multiple Choice

Earth and the Moon both move eastward in their orbits. Suppose the Moon moved westward instead, at the same rate as its actual eastward movement. What consequence would this have?

A) 1 synodic month would be the same length it is now.
B) 1 sidereal month would be the same length it is now.
C) Both synodic and sidereal months would be shorter than they are now.
D) Both synodic and sidereal months would be longer than they are now.