22.(9 points) M Service Co. reported the following for its defined-benefit pension plan for 2017:

Settlement rate3.15%

Expected rate of return on plan assets6.00%

Service cost$148,400

Actual return on plan assets$98,060

Benefits paid to retirees$91,645

Average remaining service life of existing employees20 years

Projected benefit obligation as of 12-31-16$1,898,000

Fair value of plan assets as of 12-31-16$1,796,000

Other comprehensive income - Prior Service Cost as of 12-31-16$40,000 dr

Other comprehensive income - Gains/Loss as of 12-31-16$192,600 cr

M amortizes its prior service cost on a straight-line basis over the average remaining service life of its existing employees.

a)Using the above information for M, prepare a pension work sheet for 2017.

b)Using the work sheet, prepare the journal entry to reflect the accounting for the company's pension plan for the year ending December 31, 2017.

c)Will M need to record corridor amortization for 2018, yes or no? Support your answer mathematically.