Dragon Consultants Group's computer system has been down several times over the past few months as shown in Table 2. Number of breakdowns Monthly frequency Table 2 0 6 1 2 2 6 3 4 4 2 i) Derive the expected number of breakdowns. ii) If each time a machine breaks down, the company loses RM500. Calculate the expected breakdown cost per month. iii) If the company is considering implementing preventive maintenance to reduce breakdowns to 0.5 per month, determine whether preventive maintenance is a more cost-effective option if the monthly cost going to be RM400