Arctic ice plays an important role in cooling the earth. What evidence from the text best supports this statement?

А. In the last 30 years, more than one-third of the ice that appears in the Arctic during the summer has melted away.
B. Arctic ice reflects the sun's light.
C. When Arctic ice melts, it reveals more of the darker-colored land or ocean
water.
D. Darker-colored land absorbs the sun's light, causing the climate's
temperature to increase.