Which of the following is the minimum limitation necessary for filing an involuntary bankruptcy petition?

a. The signature of 12 creditors to whom the debtor owes at least $10,000 in unsecured debt. LO4

b. The signature of six creditors to whom the debtor owes at least $20,000 in unsecured debt.

c. The signature of three creditors to whom the debtor owes at least $13,475 in unsecured debt.

d. The signature of nine creditors to whom the debtor owes at least $25,000 in unsecured debt.