$11-32.$ A sampled data acquisition system is being used to digitize an audio signal. Assume the sample frequency F$,$ is $20$ kHz$.$ Determine the output frequency that will be heard for each of the following input frequencies. $($a$)$ Input signal $=5$ kHz $($b$)$ Input signal $=10\mathrm{.}1$ kHz $($c$)$ Input signal $=10\mathrm{.}2$ kHz $($d$)$ Input signal $=15$ kHz $($e$)$ Input signal $=19\mathrm{.}1$ kHz $($f$)$ Input signal $=19\mathrm{.}2$ kHz