Of the Following Errors, Which One by Itself Will Cause

Multiple Choice

Of the following errors, which one by itself will cause the trial balance to be out of balance?

A) A $200 cash salary payment posted as a $200 debit to Cash and a $200 credit to Salaries Expense.
B) A $100 cash receipt from a customer in payment of his account posted as a $100 debit to Cash and a $10 credit to Accounts Receivable.
C) A $75 cash receipt from a customer in payment of his account posted as a $75 debit to Cash and a $75 credit to Cash.
D) A $50 cash purchase of office supplies posted as a $50 debit to Office Equipment and a $50 credit to Cash.
E) An $800 prepayment from a customer for services to be rendered in the future was posted as an $800 debit to Unearned Revenue and an $800 credit to Cash.