Answer:
D. Creditor
Explanation:
A Creditor is a company, person or organization that provides goods, services or monetary loan to another person or company to be repaid at a stipulated later date.
In this context, Atlantis bank is the creditor who provided the loan to Krugman Tractors (the debtor). Krugman Tractors would record the loan on their book of accounts (balance sheets) as a non-current (or long-term) liability.