Stark Inc. follows IFRS for financial reporting and has established a defined benefit pension plan for employees. Pertinent details for the year ended December 31, 20X5, are as follows: Stark Inc. follows IFRS for financial reporting and has established a defined benefit pension plan for employees. Pertinent details for the year ended December 31, 20X5, are as follows: Stark Inc. follows IFRS for financial reporting and has established a defined benefit pension plan for employees. Pertinent details for the year ended December 31, 20X5, are as follows:Current service costaccruedend of year$52,000Past service costaccrued beginning of year$10,000Benefits paid evenly throughout the year$85,000Discount rate used by actuary6%Actuarial losses in the year$10,000Pension obligation as at January 1, 20X5$650,000Plan assets as at January 1, 20X5$625,000What is the balance of the pension obligation as at December 31, 20X5?

a.$674,050

b.$673,450

c.$654,050

d.$671,500