What effect would the following action have on a firm's current ratio?

Assume current assets $=$$$900$ and current liabilities $=$$$700.$

Action: $$100$ short$-$term bank loan is repaid with $$100$ in cash

A$.$ not change

B$.$ decrease

D$.$ increase

What effect would the following actions have on a firm's current ratio?

Assume current assets $=$$$900$ and current liabilities $=$$$700.$

Action: inventory is purchased with $($short$-$term$)$ credit

a$.$ not change

b$.$ decrease

c$.$ increase