which one ?

On December 12, ABC Company issues a check (No.543) in the amount of $645 for payment of repair expenses. The amount of check, however, is erroneously recorded in ABC's accounting records as $465. In the bank reconciliation prepared at December 31, because of the error on the check (No.453): Select one: a. $180 should be added to unadjusted book balance b.$180 should be deducted from unadjusted book balance c.$180 should be added to unadjusted bank balance d. $180 should be deducted from unadjusted bank balance