Mrs. Patterson hired a company to mow and clean her lawn. They charge a $25 initial fee and $20 for every hour of yard work. The final cost of the lawn service was $105. Which equation models this situation and is solved correctly to determine the number of hours, h, the lawn company spent cleaning her yard?
A 20h=105: h=5.25
B 25+20h=105: h=4
C 25h+20=105: h=3.4
D 25+20h=105: h=5