Task: Question Answering
Input (English): A student dissolves 20 g of table salt in a glass of water. Which statement explains what happens to the weight of the table salt after it dissolves?  
 (A) The weight decreases because the pieces of table salt are much smaller. (B) The weight increases because the table salt is spread throughout the water. (C) The weight stays the same because the amount of table salt does not change. (D) The weight is zero because the table salt has become a liquid.
Output (English): C