Explain clearly

(a) Identify each of the following cash items whether it is fixed cost, variable cost, sunk cost, or opportunity cost. (i) Company A invests RM 5,000,000 over a five-year period to research and develop a new pharmaceutical product (1 mark) (1i) A sales commission on every sale for a company (1 mark) (iii) Repayment of a loan by company B to the bank (1 mark) (iv) A young woman wants to spend her time either working as a financial advisor or volunteering for a non-profit (1 mark) (v) Credit card fees charged to a business if the business enters into a credit purchase with customers (1 mark)