(b) \\ ' 77"77 77' I The table below shows the total revenue and total cost for Teska Berhad at various quantities of output. Quantity (in units) Total Revenue (in RM) Total Cost (in RM) 5 20 158 15 97 187 25 158 229 30 166 255 (1) Compute the marginal cost and marginal revenue of Teska Berhad for each level of output. (7 marks) (ii) Determine the prot-maximising output, price and prot earned by Teska Berhad. (4 marks) (iii) Based on the answer in part (ii), determine whether Teska Berhad should shut down or not. (3 marks) [Total: 25 marks]