This GRE quantitative comparison question tests your understanding of prime factorization.

$$ n = (15^3) (25^4) (12^6) (28^3) $$

$\begin{array}{c c c c c}

& \underline{\textrm{Quantity A}} & & & & \underline{\textrm{Quantity B}} \\

& & & & & \\

& \textrm{The number of distinct prime factors of $n$} & & & & 5 \\

\end{array}$

- $\quad \textrm{Quantity A is greater.}$
- $\quad \textrm{Quantity B is greater.}$
- $\quad \textrm{The two quantities are equal.}$
- $\quad \textrm{The relationship cannot be determined from the information given.}$

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