The set of items below was identified in preparing a bank reconciliation for Mars Corp, as of August 31, 2017. Bank statement balance $19,500 Mars's book balance (before adjustments) Outstanding checks 2,700 Customer's NSF check 350 Service charges 100 Deposit in transit 1,000 Interest earmed on checking account 60 Mars Corp.'s balance per books before the reconciliation is Oa. $17410. b. S17900. Oc. S18 190. Od. $18,310.