A student weighed some raisins and recorded the weight as $x$. She then soaked the raisins in distilled water. After about $2 \text{ hours}$, she removed the raisins, wiped them dry, and weighed them again, recording the weight as $y$. The percentage of water absorbed by the raisins can be determined using the relationship:

• A
  $\frac{y - x}{y} \times 100$
• B
  $\frac{y - x}{x} \times 100$
• C
  $\frac{y - x}{x} \times \frac{1}{100}$
• D
  $(y - x) \times 100$