Write Each Rate or Ratio as a Fraction in Lowest $\frac{5}{12}$

Write each rate or ratio as a fraction in lowest terms.
Change to the same units when necessary.
-A bus seats 48 people. The minibus seats 20 people. Find the ratio of bus seats to minibus seats.

A) $\frac{5}{12}$
B) $\frac{12}{5}$
C) $\frac{20}{48}$
D) $\frac{48}{20}$