Electronics Service Co. pays salaries monthly on the last day of the month. The following information is available from Electronics for the month ended December 31, Year 1: Administrative salaries Sales salaries Office salaries $96,000 57,000 38,000 Assume the Social Security tax rate is 6 percent on the first $130,000 of salaries. Duke reached the $130,000 amount in December. His salary is $11,500 per month and is included in the $96,000. No one else will reach the $130,000 amount for the year. None of the employee salaries are subject to unemployment tax in December. Other amounts withheld from salaries in December were as follows: Federal income tax State income taxi Employee savings plan. Required $21,500 11,200 4,000 a. Determine the net pay for employee salary expenses on December 31, Year 1 Net pay b. Determine the amount of payroll tax expense for Electronics Service Co. for December, Year 1. Payroll tax expense