Which of the following operations has the same effect on a number as multiplying by \dfrac{3}{4} and then dividing by \dfrac{3}{5} ?
Answer Choices
A. dividing by \dfrac{4}{3}
B. dividing by \dfrac{9}{20}
C. multiplying by \dfrac{9}{20}
D. dividing by \dfrac{5}{4}
E. multiplying by \dfrac{5}{4}