The coefficient of friction between a locomotive's wheels and the rails is 0.10. The locomotive has a mass of 70 tonnes and each of the two wagons it is hauling has a mass of 25 tonnes. What is the steepest slope that the train can climb without slipping? O A. 1 in 14 OB. 1 in 16 C1 in 15 O D. 1 in 17 ○ E. 1 in 18 N

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