Let two shares A and B, which in the last six weeks show the returns shown in the table below.

	1st week	2nd week	3rd week	4th week	5th week	6th week
Share A	0.07	0.10	-0.04	0.05	-0.01	-0.05
Share B	0.11	0.01	-0.08	0.12	0.08	0.14

A) Calculate the average return of shares A and B for the period of 6 weeks, using the arithmetic mean. B) Assuming that there is a portfolio that includes the 2 shares in equal percentages (50% - 50%), what is the average return of the portfolio? C) Calculate the risk (standard deviation) of shares A and B. Which share do you consider more dangerous based on the criterion of the coefficient of variation (CV)?

D) Participate in a retirement plan which gives you the following options for how to collect your pension. 1st choice: Annual installments of 11,000 euros for 20 years. 2nd option: Payment of 500,000 euros at the end of the investment horizon, ie in 0 years. Knowing that the nominal interest rate is equal to 7%, evaluate the two investments.