Which of the following inertial reference frames are proper frames for the two events listed? Choose all that apply. D RED FRAME: Event A happened at a different place than event B. O ORANGE FRAME: Event C happened at (-4 m, 1 m, 4 m) and event D happened at (4 m, 0.1 m, 4 m). O YELLOW FRAME: The distance between where event E occurred and where event F occurred was 1 m. 2 GREEN FRAME: A rocket was traveling at a constant velocity when it passed through a stationary tunnel. Event G was the front of the rocket entering the tunnel and event H was the the front of the rocket leaving the tunnel. O BLUE FRAME: A stationary rocket was engulfed by a hollow cylinder that was moving at a constant velocity. Event J was the front of the rocket entering the cylinder and event K was the the front of the rocket leaving the cylinder.

Which of the following inertial reference frames are proper frames for the two events listed? Choose all that apply. D RED FRAME: Event A happened at a different place than event B. O ORANGE FRAME: Event C happened at (-4 m, 1 m, 4 m) and event D happened at (4 m, 0.1 m, 4 m). O YELLOW FRAME: The distance between where event E occurred and where event F occurred was 1 m. 2 GREEN FRAME: A rocket was traveling at a constant velocity when it passed through a stationary tunnel. Event G was the front of the rocket entering the tunnel and event H was the the front of the rocket leaving the tunnel. O BLUE FRAME: A stationary rocket was engulfed by a hollow cylinder that was moving at a constant velocity. Event J was the front of the rocket entering the cylinder and event K was the the front of the rocket leaving the cylinder.