A binary star is made up of two stars that orbit a shared centre. Light from one star is detected on the Earth. The measured frequency of the light changes from a minimum frequency $f_{\min}$ to a maximum frequency $f_{\max}$, as shown. The rotation rate of the binary star rises. How do $f_{\max}$ and $f_{\min}$ change?
- A$f_{\max}$ decreases, $f_{\min}$ decreases
- B$f_{\max}$ decreases, $f_{\min}$ increases
- C$f_{\max}$ increases, $f_{\min}$ decreases
- D$f_{\max}$ increases, $f_{\min}$ increases