With reference to case study session 1, obtain the Dow Jones Islamic Index over a recent 15 year period. Then answer the following questions. End of Dow Jones Islamic Year Index 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 a) Calculate the simple annual rates of return. b) Calculate the arithmetic average of the annual rates of return. c) Calculate the geometric average of the annual rates of return. d) Compare your answers in Parts b and c. How do you account for the difference between these averages? e) Critically evaluate the performance of the DJII with other index.