Would the following events increase or decrease a firm's current ratio?

Note: If there is no effect, select $"$No change".

a$.$ Inventory is sold.

b$.$ The firm takes out a bank loan to pay its suppliers.

c$.$ The firm arranges a line of credit with a bank that allows it to borrow at any time to pay its suppliers.

d$.$ A customer pays its overdue bills.

e$.$ The firm uses cash to buy additional inventory.