At the end of fiscal year 2019 and 2020, Westlake Company had the following liquidity ratios: In general, we can conclude the following about Westlake's liquidity from the above ratios: a. Westlake's liquidity remained stable (the same) between FYE 2019 and 2020 b. In general, Westlake's liquidity improved from 2019 to 2020 c. In general, Westlake's liquidity decreased from 2019 to 2020 d. More information is needed to make an assessment of Westlake's liquidity 5. Which of the following provide a Chief Financial Officer with the best assessment of a company's liquidity? Select the best answer. a. Cash balances. b. Marketable Securities and cash balances c. Undrawn credit lines with a bank d. Accounts receivable less than 30 days and cash balances e. Cash balances, undrawn credit lines, and marketable securities