Q$6)$ A digital communication system using FSK transmits Is and Os by changing the frequency of a carrier signal between two values, fl and f$2.$ If the frequency deviation is $200$ Hz and the bandwidth of the signal is $2$ kHz$,$ what is the maximum data rate $($in bps$)$ that the system can support?A$.500$ bps B$.1,000$ bpsC$.2,000$ bpsD$.4,000$ bps