A truck can be rented from company A for $100 a day plus $ 0.4 per mile. Company B charges $70 a day plus $0.9 per mile to rent the same truck. Choose the equation that can be used to find the number of miles m per day for which company A and company B charge the same amount. A 100d + 0.4m = 70d + 0.9m

B 100 + 0.4m =70 + 0.9m

C 100d + 0.4 = 70d+0.4

D (100 + 0.4m ) + (70 + 0.9m ) = 170 ( 0.4m + 0.90)