Task: Question Answering
Input (English): Which procedure best determines whether water temperature affects the time it will take a sugar cube to dissolve?  
 (A) Test three sugar cubes, one each in three different water temperatures. (B) Test three sugar cubes in one water temperature. (C) Test one crushed sugar cube and one whole sugar cube in water. (D) Test three sugar cubes, one each in an acid, a base, and water.
Output (English): A