Shamrock Marine Supply Company gathered the following reconciling information in preparing its April bank reconciliation: Cash balance per books, 4/30 $14800 Deposits in transit 2000 Notes receivable and interest collected by bank 4970 Bank charge for check printing Outstanding checks NSF check 170 10100 940 The adjusted cash balance per books on April 30 is O $18660. O $20540. O $19770. O $20660.