3. The sales data in the table below is for Vestas Wind Systems and is in millions of euros. Calculate the simple or arithmetic average growth rate for sales between 2010 and 2021.

Year	2021	2020	2019	2018	2017	2016	2015	2014	2013	2012	2011	2010
Revenue	15,587	14,819	12,147	10,134	9,953	10,237	8,423	6,910	6,084	7,216	5,836	6,920

a. 20.48% b. 11.53% c. 8.67% d. 3.42% e. 2.52%

4. Calculate the compound or geometric average growth rate for sales for the period from 2010 and 2021.

a. 11.53% b. 13.87% c. 9.42% d. 8.67% e. 7.66%