\(\Large \dfrac{20}{21}\) \(\Large \dfrac{2}{21}\) \(\Large \dfrac{21}

• A.

  \(\Large \dfrac{20}{21}\)

• B.

  \(\Large \dfrac{2}{21}\)

• C.

  \(\Large \dfrac{21}{20}\)

• D.

  \(\Large \dfrac{19}{21}\)

\(\Large \dfrac{3}{5} \times \dfrac{4}{21} \times \dfrac{25}{3} =  \dfrac{3 \times 4 \times 5 \times 5}{5 \times 7 \times 3 \times 3} =  \dfrac{20}{21}\)