Selected balance sheet and income statement information for the office supply retailer, Organized Plus Co., for 2019 through 2017 follows:

($ thousands)	2019	2018	2017
Interest expense	$ 414,794	$262,105	$67,086
Pretax income	2,311,788	2,486,168	3,088,964
Net income	1,477,342	1,610,528	1,991,340
Current assets	12,349,534	11,594,516	9,110,760
Total assets	27,434,668	26,146,110	18,072,680
Current liabilities	6,619,060	8,479,538	4,567,325

a. Compute the current ratio for each year and discuss any trends.

b. Compute times-interest-earned ratio for each year and discuss any trends.