Linda keller opened a consulting firm, keller consulting p. c. during its first month of operations, the following transactions were completed:
i. linda invested $30,000 in the business, which in turn issued common stock to her.
ii. the business purchased equipment on account for $63,000
iii. the business provided consulting services on account, $12,000
iv. the business paid salaries to the receptionist, $2,000
v. the business received cash from a customer as payment on account of $6,000
vi. the business borrowed $13,000 from the bank, issuing a note payable

at the end of the month, total liabilities are:
a. $63,000
b. $76,000
c. $75,000
d. $13,000