please answer all parts.

Transactions and T Accounts The following selected transactions were completed during July of the current year: 1. Billed customers for fees earned, $51,480. 2. Purchased supplies on account, $2,210. 3. Received cash from customers on account, $48,390. 4. Paid creditors on account, $1,340. a. Journalize these transactions in a two-column journal, using the appropriate number to identify the transactions. If an amount box does not require an entry, leave it blank. (1) (2) (3) (4) b. Post the entries prepared in (a) to the following T accounts: Cash, Supplies, Accounts Receivable, Accounts Payable, Fees Earned. To the left of each amount posted in the accounts, select the appropriate number to identify the transaction. en almount posted in the accounts, select the appropriate numberto Toenary the transaction Cash Accounts Payable Supplies Fees Earned Accounts Receivable C. Assume that the unadjusted trial balance on July 31 shows a credit balance for Accounts Receivable. Does this credit balance mean an error has occurred