urgent pls

5. In the regression model Y=$150,000+$30X,Y is total Repairs \& Maintenance (R\&M) cost and X is machine hours. The above equation implies that an A. increase of 1 machine hour is associated with an increase of $30,000 in total R\&M cost. B. increase of 1 machine hour is associated with an increase of $30 in total R\&M cost. C. increase of 20 machine hours is associated with an increase of $120,000 in total R\&M cost. D. increase of 20 machine hours is associated with an increase of $60,000 in total R\&M cost