b) Nkunim's firm carries an average annual inventory of $2,000,000. If it estimates the cost of capital is 10%, storage costs are 7%, and risk costs are 6%, Determine how much it cost per year to carry this inventory? c) Operations and marketing work together for the growth and development of your organisation. As a student of operations management identify any five (5) benefits for such collaboration. d) Briefly explain the purpose of each of these control charts: i) x-bar ii) Range charts iv) c-chart iii) p- e) Briefly define production system and briefly explain how the concept of production system help in understanding operations management