Please do step by step and show your calculation

4) Suppose that you are given the following information for BlackBerry's common stock: Year 2017 2018 2019 2020 2021 Price ($) 26.0 28.6 26.3 30.5 31.1 What is the arithmetic mean of the rate of return for BlackBerry's stock? What is the geometric mean of the rate of return for BlackBerry's stock? Which return is lower, the arithmetic average return or the geometric average return