PLEASE ANSWER ALL THE QUESTIONS AND SHOW WORK

Sarasota Company began operations on July 1, 2015 , and has used the average-cost method of inventory valuation since its inception. In 2019, it decides to switch to the FIFO method. You are provided with the following information: (a) What is the beginning retained earnings balance at January 1, 2016, if Sarasota prepares comparative financial statements starting in 2018 ? Retained earnings, January 1$ (b) What is the beginning retained earnings balance at January 1, 2018, if Sarasota prepares comparative financial statements starting in 2018? (b) What is the beginning retained earnings balance at January 1, 2018, if Sarasota prepares comparative financial statements starting in 2018? Retained earnings, January 1$ (c) What is the beginning retained earnings balance at January 1, 2019, if Sarasota prepares comparative financial statements starting in 2019? Retained earnings, January 1$ (d) What is the net income reported by Sarasota in the 2018 income statement if it prepares comparative financial statements starting with 2016 ? Net Income $