How could you prove that Orion is not visible during summer in the United States? Choose the two correct answers. A. Use a diagram of Earth’s revolution to show that it is daytime when you’re looking toward Orion during summer.

B. Use a telescope to conduct direct observation of Earth's revolution around the sun.

C. Show that it's harder to see constellations when the moon is bright.

D. Ask someone in Australia if they could see Orion during their summer.

E. Show how constellations move across the sky during the night.