In a Defined Benefit Pension Plan, Gains and Losses (Either

In a defined benefit pension plan, gains and losses (either from changing assumptions regarding the PBO or from the return on assets being higher or lower than expected) are:

A) deferred and not immediately included in pension expense and net income
B) included in pension expense and net income
C) included in pension expense but not net income
D) included in net income but not in pension expense