5⁵*4²*2³/5⁴*4⁴*2³=
5*5*5*5*5*4*4*2*2*2=400,000 and 5*5*5*5*4*4*4*4*2*2*2=1,280,000.
Now Simplify [tex] \frac{400,000}{1,280,000}[/tex]:[tex] \frac{400,000:80,000}{1,280,000:80,000}= \frac{5}{16}[/tex]
So, the answer is A. [tex]\boxed{ \frac{5}{16}}[/tex]
