Simplify answer should only contain positive exponents

Answer:
13) [tex]\frac{3m}{2n^2}[/tex] (answer (C))
14) [tex]\frac{4b}{3}[/tex] (answer (A))
Step-by-step explanation:
Problem 13)
Cancel out in PAIRS the common factors in numerator and denominator
[tex]\frac{3m^4n^2}{2m^3n^4} =\frac{3m}{2n^2}[/tex]
which agrees with answer C
Problem 14)
Cancel out in PAIRS the common factors in numerator and denominator
[tex]\frac{4a^2b^2}{3ba^2} =\frac{4b}{3}[/tex]
which agrees with answer A