The amplitude of one wave is $2A$. A second wave has amplitude $\frac{A}{2}$. Apart from that, the two waves are the same. The waves move in opposite directions and superpose. What is the ratio $\frac{\text{maximum amplitude of combined wave}}{\text{minimum amplitude of combined wave}}$?
- A$\frac{3}{2}$
- B$\frac{5}{3}$
- C$\frac{5}{2}$
- D$4$