The table below gives the cost per person to rent a fishing charter boat. Find the rate of change given that it is constant. Also, explain what the rate of change means for this situation.

People | Cost($)
2 | 110 
3 | 165 
4 | 220 
5 | 275 

A: 1/55
B: 110/1
C: 1/275
D: 55/1