The Bookkeeper for B ?
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See the Journal Entries

The bookkeeper for B.Sebastian & Company,Inc.prepared the following journal entries and posted the entries to the general ledger as indicated in the T accounts presented.Assume that the dollar amounts and the descriptions of the entries are correct.
Journal entries:
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$\begin{array}{llr} \text { Dct. 5 \quad Accounts Receivable } &1,600\\ \text { Service Revenue} &&1,600\\ \text { Customers were billed for services completed } &\\\\ \text { 11 \quad Cash } &500\\ \text { Service Revenue } & &500\\ \text {Payment is received from a custom er billed for services on } &\\ \text {October 1. } &\\\\ \text { 15\quad Office Supplies} &700\\ \text { Accounts Payable } &&700\\ \text { Purchased office furniture on credit; payment is due in 30 days. } &\\\\ \text { 25\quad Office Furniture } &700\\ \text { Payment is made for the office furniture bill received on} &&700\\ \text {October 15. } &\\\end{array}$
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See the journal entries and T accounts for B.Sebastian & Company.
Required
If you assume that all journal entries have been posted correctly,use the above information to answer these questions:
(1)Identify the transactions that the bookkeeper recorded incorrectly in the general journal.
(2)Prepare the journal entry that the bookkeeper should have made for each transaction that you have identified as being made incorrectly.
(3)For each journal entry recorded incorrectly,indicate the impact of the error on the accounting equation.For your answer,indicate whether each element of the accounting equation,Assets,Liabilities,and Stockholders' Equity,has been "Understated" or "Overstated" or there has been "No Effect."