The payroll register of charbroil company indicates $1,200 of social security tax withheld and $300 of medicare tax withheld on total salaries of $20,000 for the period. assume earnings subject to state and federal unemployment compensation taxes are $7,000, at the federal rate of 0.8% and the state rate of 5.4%. what is the total amount of payroll tax expense? a. $1,878b. $1,500c. $1,556d. $1,934