Which of the following proportions is false?

A. \( \frac{24}{30} = \frac{20}{25} \)

B. \( \frac{18}{48} = \frac{20}{50} \)

C. \( \frac{25}{45} = \frac{75}{135} \)

D. \( \frac{10}{25} = \frac{40}{100} \)