Task: Question Understanding
Input (English): Question: A student pours a clear liquid from a test tube into a beaker with a clear liquid already in it and notices that the mixture turns pink. The student infers the two clear liquids are different. This inference is a result of (A) class discussion. (B) previous knowledge. (C) temperature changes. (D) student observations.?
Output (English): liquid, mixture, turns, pink., infers, liquids, different., inference, result