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	(610	)											91
Service cost																	95
Interest cost
Expected return on assets																	(34	)
Gain/loss on assets													(7.50	)
Amortization of:
Prior service cost									(17	)
Net gain/loss
Loss on PBO	(36	)											36
Contributions to fund																					(89	)
Retiree benefits paid	65				(65	)
Ending balance	(702	)			352				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?

Multiple Choice

Net pension asset of $519.00 million.

Net pension asset of $323.50 million.

Net pension liability of $519.00 million.

Net pension liability of $323.50 million.