Splish Company started operations on January 1, 2015, and has used the FIFO method of inventory valuation since its inception. In 2021, it decides to switch to the average-cost method. You are provided with the following information.

		Net Income				Retained Earnings (Ending Balance)
		Under FIFO		Under Average-Cost		Under FIFO
2015		$109,100		$99,300		$103,400
2016		65,800		60,400		146,000
2017		84,300		75,000		240,300
2018		118,400		127,400		353,700
2019		300,300		289,800		645,300
2020		308,600		313,500		728,000

(a) What is the beginning retained earnings balance at January 1, 2017, if Splish prepares comparative financial statements starting in 2017?

Retained earnings, January 1

$enter the Retained earnings at January 1 in dollars

(b) What is the beginning retained earnings balance at January 1, 2020, if Splish prepares comparative financial statements starting in 2020?

Retained earnings, January 1

$enter the Retained earnings at January 1 in dollars

(c) What is the beginning retained earnings balance at January 1, 2021, if Splish prepares single-period financial statements for 2021?

Retained earnings, January 1

$enter the Retained earnings at January 1 in dollars

(d) What is the net income reported by Splish in the 2020 income statement if it prepares comparative financial statements starting with 2018?