The demand distribution of a portable refrigerator in a retail unit in a week is furnished below: Demand 4 Probability 0.04 5 0.06 6 0.45 7 0.3 8 0.08 9 0.05 10 0.02 The retail and cost prices of a portable refrigerator are Rs. 4,000 and Rs. 3,000 respectively. An unsold portable refrigerator is salvaged at Rs. 2,000. bro i) What is the expected demand of the portable refrigerators at the above retail unit? ii) What is the expected profit from order of 6 portable refrigerators ? iii) Draw a 2D graph to indicate the relationship between expected profit and order quantity. From this graph, determine the order quantity and Cycle Service Level.