In june, erie plastics had an ending cash balance of $55,000. in july, the firm had total cash receipts of $70,000 and total cash disbursements of $10,000. the minimum cash balance required by the firm is $25,000. at the end of july, erie plastics hada. an excess cash balance of $90,000b. an excess cash balance of $0c. an excess cash balance of $115,000d. required financing of $25,000 e. none of the above