The picture below shows a parallelogram-shaped bookshelf Aaron bought for his wall. He rotates the shelf 90° clockwise and then 180° counterclockwise to decide how to arrange it on the wall. Which of the following statements is true about this shelf after Aaron rotates it?

A) The measure of angle Q would be 70°

B) The measure of angle R would be 70°

C) The measure of angle S would be 110°

D) The measure of angle P would be 140°​