Which of the following is a rule related to requesting Trend report$($s$)?$

A$.$

You must select four or more participating hotels

B$.$

A single hotel may account for a maximum of $50$ percent of the participating room supply

C$.$

If you request multiple Trend reports, the hotels you have selected must differ by more than one participating hotel on subsequent Trend request

D$.$

All of the above are rules related to requesting a Trend Report