Assume that at the beginning of the current year, a company has a net gain-AOCI of $25,000,000. At the same time, assume the PBO and the plan assets are $300,000,000 and $150,000,000, respectively. The average remaining service period for the employees expected to receive benefits is 10 years. What is the amount of amortization to pension expense for the year? O $1,000,000. $0. O $3,000,000. $500,000.