Simplify using positive exponents.
Please and thank you!

Answer:
B
Step-by-step explanation:
[tex](a^{m})^{n}=a^{m*n}\\\\\\(4^{-4})^{2}=4^{-4*2}=4^{-8} =\dfrac{1}{4^{8}}[/tex]
[tex]a^{-m}=\dfrac{1}{a^{m}}[/tex]