Structural Mechanics

For a fifty percent reaction axial compressor stage, following statements are given: I. Velocity triangles at the entry and exit of the rotor are symmetrical II. The whirl or swirl component of absolute velocity at the entry of rotor and entry of stator are same. Which of the following options are correct? (A) Both I and II are correct statements (B) I is correct but II is incorrect (C) I is incorrect but II is correct (D) Both I and II are incorrect