The table below shows annual returns for stocks of companies X and Y. Calculate the arithmetic average returns. In addition, calculate their variances, as well as their standard deviations.

year	returns x	returns y
1	6%	22%
2	24%	43%
3	13%	-14%
4	-14%	-28%
5	15%	51%

Requirement 1:
(a)	The arithmetic average return of company X's stock is:
	(Click to select) A.7.13% B.10.74% C.11.00% D. 9.94% E.8.80%

(b)	The arithmetic average return of company Y's stock is:
	(Click to select) A.18.50% B.18.06% C.14.80% D.16.72% E.11.99%

Requirement 2:
(a)	The variance of company X's stock returns is: (Do not round intermediate calculations.)
	(Click to select) A.0.024945 B.0.019956 C.0.020370 D.0.025462 E.0.016500

(b)	The variance of company Y's stock returns is: (Do not round intermediate calculations.)
	(Click to select) A.0.133411 B.0.097581 C.0.120470 D.0.106729 E.0.150588

Requirement 3:
(a)	The standard deviation of company X's stock returns is: (Do not round intermediate calculations.)
	(Click to select) A.11.56% B.14.27% C.15.79% D.17.84% E.14.03%

(b)	The standard deviation of company Y's stock returns is: (Do not round intermediate calculations.)
	(Click to select) A.43.39% B.34.71% C.28.11% D.36.53% E.32.67%