a$.$ In CRC$,$ which of the following generators $($divisors$)$ guarantees the detection of a single bit error? WhyI. $101$ II$.100$ II$.1$ b$.$ In CRC$,$ which of the following generators $($divisors$)$ guarantees the detection of an odd number of errors?I. $10111$ II$.101101$ III. $111$ c$.$ In CRC$,$ we have chosen the generator $1100101.$ What is the probability of detecting a burst error of lengthI. $5?$ II$.7?$ III. $10?$