Question 15 Not yet answered Points out of 1.00 P Flag question Below are the prices for stock XZY. Use that information to calculate this stock's average return. standard deviation, and variance of returns. Year Price 1989 3.2 1990 2.09 1991 6.52 1992 5.34 1993 2.18 1994 7.64 1995 12.36 1996 20.66 1997 45 1998 69.34 Select one: O a average 72.37%; standard deviation =106.47% : variance = 1.1336 b. average = 88.23%; standard deviation =92.49% : variance - 0.1220 c. average = 62.23%; standard deviation =42.49% : variance = 0.1805 Give your reasons