The coat ofa breakdown is $100. Expected number of breakdowns per month without preventive maintenance is 1.5. prreventive maintenance is used it will cost $40 per month and only .5 breakdowns are expected. What is the most cost- effective solution? Multiple Choice DBODk A repair after breaking down is $40 cheaper per month than preventive maintenance Use preventive maintenance it is $60 less per month than breakdown maintenance. A breakdown with preventive maintenance is $40 per month costlier than breakdown maintenance. 0000 Use preventive maintenance it is $50 less per month than breakdown maintenance