Although the RevPAR number is important, this number does not take into consideration some critical information related to hotels, including hotels' other revenue and profits. Thus, in the hotel industry.

a$.$ TRevPAR $($Total revenue per available room$)$

b$.$ GOPPAR $($Gross operating profit per available room$)$

c$.$ NIPAR $($Net income per available room$)$

d$.$ All of the above