(b) Explain briefly the terms (i) profitability, (ii) liquidity and (iii) solvency. (3 marks)(c) Based on the ratios calculated in (a), comment on the (i) profitability and (ii) liquidityof the two firms. (10 marks)8QUESTION 4 (29 marks)Data concerning the Wilson Company’s single product appear below:PerUnitPercentageof SalesSelling price $190 100 %Variable expenses 76 40 %Contribution margin $114 60 %Fixed expenses are $522,000 per month. The company is currently selling 6,000 units permonth.The marketing manager would like to cut the selling price by $19 and increase the advertisingbudget by $30,900 per month. The marketing manager predicts that these two changes wouldincrease monthly sales by 1,600 units.Required:(a) What is the revised contribution margin per unit? (3 marks)(b) What is the new monthly sales units? (3 marks)(c) What should be the overall effect on the company's monthly net operating income of thischange? (7 marks)(d) Calculate the break-even point of the business in units (to the nearest unit)(i) before the change and(ii) in the new situation with the changes suggested by the marketing manager.(8 marks)(e) Calculate the margin of safety of the business in units (to the nearest unit)(i) before the change and(ii) in the new situation with the changes suggested by the marketing manager