The table below presents data on the performance of a portfolio, which consists of global investments, as well as the reference portfolio during the last month.

Country	Reference portfolio Weighting Rate	Weighting Rate portfolio	portfolio performance in each country	Reference Index Performance in each country
Switzerland	0,15	0,30	20%	12%
Japan	0,30	0,10	15%	15%
USA	0,45	0,40	10%	14%
Germany	0,10	0,20	5%	12%

a. Calculate the total added value of the administrator's decisions for this period. b. Calculate the effect on the performance of allocation decisions in each country. c. Calculate the effect on performance from the selection of individual shares within countries.