A $10$ cm Doppler radar operating at a PRF of $1500$ s$-1$ has a maximum unambiguous velocity of

Group of answer choices

$20\mathrm{.}0$ m$/$s

$75\mathrm{.}0$ m$/$s

$37\mathrm{.}5$ m$/$s

$25\mathrm{.}0$ m$/$s