$A$ balloon contains $2.27 \ L$ of air and has a pressure of $1.013 \times 10^5 \ Nm^{-2}$. The balloon rises to a certain height and expands to a volume of $4540 \ mL$. What is the final pressure of air in the balloon?

• A
  $2.026 \times 10^2 \ Nm^{-2}$
• B
  $5.065 \times 10^4 \ Nm^{-2}$
• C
  $4.540 \times 10^4 \ Nm^{-2}$
• D
  $5.065 \times 10^{-4} \ Nm^{-2}$