On January 2, 20X2, East Corp. adopted a defined benefit pension plan. The plan's service cost of $150,000 was fully funded at the end of 20X2. Prior service cost was funded by a contribution of $60,000 in 20X2. Amortization of prior service cost was $24,000 for 20X2. At December 31, 20X2, what amount should East report as prepaid pension cost?

$60,000

$36,000

$84,000

$90,000