The following incomplete (columns have missing amounts) pension spreadsheet is for Old Tucson Corporation (OTC). ($ in millions) debit (Credit) PBO Plan Assets Prior Service Cost Net(Gain)loss Pension Expense Cash Net Pension (Liability)/Asset Beginning balance (580 ) 82 Service cost 86 Interest cost Expected return on assets (31 ) Gain/loss on assets (6.00 ) Amortization of: Prior service cost (14 ) Net gain/loss Loss on PBO (33 ) 33 Contributions to fund (80 ) Retiree benefits paid 59 (59 ) Ending balance (667 ) 334 78 102 (333 ) What is OTC's pension expense for the year