Question 3 On January 1, 2018 Derek Co.'s defined benefit pension plan has an unamortized prior service cost - 5166.889. The unmorized price service costs being amorised over the expected remaining service lives of covered employees, which consists of a total of 11 employees 4 employees are each expected to have 6 years remaining 4 employees are each expected to have 7 years remaining . 3 employees are each expected to have 3 years remaining . How much amortization of prior service cost will be included in Derek Co.'s pension expense for 2018