An infrared spectrometer on Dawn found something unexpected on Ceres's surface. Its presence suggested that Ceres might have formed farther from the Sun, or been impacted by objects from a more-distant part of the solar system. What was this finding? a The presence of clay-like minerals with ammonia bound up in them. b The infrared spectrum of Ceres's surface is essentially identical to that of most obects in the Kuiper belt. c The fact that Ceres is covered with small dark particles that appear identical to the composition of Uranus's rings d The presence of a thick cloud layer made of sulfuric acid, similar to what is observed at Venus

An infrared spectrometer on Dawn found something unexpected on Ceres's surface. Its presence suggested that Ceres might have formed farther from the Sun, or been impacted by objects from a more-distant part of the solar system. What was this finding? a The presence of clay-like minerals with ammonia bound up in them. b The infrared spectrum of Ceres's surface is essentially identical to that of most obects in the Kuiper belt. c The fact that Ceres is covered with small dark particles that appear identical to the composition of Uranus's rings d The presence of a thick cloud layer made of sulfuric acid, similar to what is observed at Venus