Years of service amortization of PSC 1/1/x1 Company A amends their defined benefit plan and ves credit for prior years' work. This amendment increases the PBO by $5,600. At the time of the amendment, Company A had 150 employees covered by the plan who were expected to work a total of 1800 years prior to leaving the company. Ten employees left the company after the end of x1. How would Company A compute the amortization of the PSC under years of service method or the straight-line method