Answer:
2) A debit memo showing a bank service charge
4) An NSF check written by one of Blake's customers
Explanation:
For determining the true cash balance, we have to deduct the following items which are shown below:
1) A debit memo showing a bank service charge
2) An NSF check was written by one of Blake's customers
These both the items should be deducted because in the bank service charge and NSF check, the bank deduct the charges from the customer account.
The other items would not affect the company's unadjusted book balance. So, we do not consider it.