Task: Question Answering
Input (English): A teacher gives a student an unknown liquid and wants the student to find the boiling point of the liquid. The student performs the investigation and finds the boiling point is 50°C and then repeats the experiment and finds the boiling point is 70°C. How should the student best identify the boiling point?  
 (A) use the second boiling point (B) average the two numbers (C) use the first boiling point (D) repeat the investigation
Output (English): D