The following incomplete (columns have missing amounts) pension spreadsheet is for the current year for First Republic Corporation (FRC).

($ in millions) Debit(Credit)	PBO	Plan Assets	Prior Service Cost	Net (Gain)/Loss	Pension Expense	Cash	Net Pension (Liability)/Asset
Beginning balance	(720)		30	(92)
Service cost					64
Interest cost					36
Expected return on assets		70
Gain/loss on assets				(4)
Amortization of:
Prior service cost			(9)
Net gain/loss				5
Loss on PBO	(10)
Contributions to fund						(47)
Retiree benefits paid		(67)
Ending balance		720		(83)

What was the actuary's interest (discount) rate?

9%

5%

10%

8%