Integrate the function.

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{\sqrt[\phantom{2}]{4-x^2}}{x^4}dx,x<mn>2</mn>$

A$.\frac{4}{(4-x^2{)}^{\frac{1}{2}}}C$

B$.-\frac{12x^3}{(4-x^2{)}^{\frac{3}{2}}}C$

c$.\frac{(4-x^2{)}^{\frac{3}{2}}}{x^3}c$

D$.-\frac{(4-x^2{)}^{\frac{3}{2}}}{12x^3}c$