You digitize an analog signal that has a bandwidth of $20$kHz by applying uncompressed PCM $($pulse code modulation$)$ with a bit$-$depth of $8($bits$/$sample$).$ What bit rate capacity $($in bits per second$)$ must your link be able to support? a$.160$ kbpsO b$.320$ kbpsO c$.640$ kbpsO d$.1\mathrm{.}28$ Mbps