21. Calculate approximately to 3 decimal places the composite price index for all three stock between 2008 and 2011. (4 marks) A. 1.24 B. 0.88 C. 0.780 D. 1.42 22. Calculate approximately to 3 decimal places the composite quantity index for all three stocks for the period 2008 to 2011. (4 marks) A. 1.322 B. 1.323 C. 1.223 D. 1.232 18. Use the information in Figure 2 below to answer questions 18 through to 22. The data in Figure 2 below has to do with the stocks of three of South Africa's biggest mobile network operators Figure 2 Calculate the approximate price relatives to two decimal places for the MTN and Vodacom stocks over the period in question. (4 marks) A. 0.71,0.67 B. 0.57,0.75 C. 0.75,0.77 D. 0.70,0.81 19. Calculate the approximate quantity relatives to two decimal places for the MTN and Cell C stocks over the period in question. (4 marks)