The following incomplete (columns have missing amounts) pension spreadsheet is for Old Tucson Corporation (OTC). Plan Assets Prior Service Cost Net (Gain) Pension loss Expense 91 Cash PBO (610) Net Pension (Liability)/Asset 95 (34) (7.50) ($ in millions) debit (Credit) Beginning balance Service cost Interest cost Expected return on assets Gain/loss on assets Amortization of: Prior service cost Net gain/loss Loss on PBO Contributions to fund Retiree benefits paid Ending balance (17) (36) 36 (89) 65 (65) 352 (702) 87 111 (350) What was the balance of the net pension asset/liability reported in the balance sheet at the end of the previous year