Based on the following cash flows (t=0 to t=4), calculate the Precise (exact) ERR. Assume the MARR is at 10%. t=0, receipts of 10,000. t=1, disbursement of 7,500. t=2, disbursement of 7,500. t=3, no cash flow t=4, receipt of 4,000. 4.6848% 6.8493% 13.7579% 8.2192% 5.1258%