An employer pays one of its unmarried employees wages totaling $300,000. The amount the employer must withhold from the employee's pay for Medicare taxes, and the amount of the employer's share of Medicare taxes for this employee are: O $4,350 and $4,350, respectively. O $4,350 and $5,250, respectively. O $5,250 and $5,250, respectively. S5,250 and S4,350, respectively. O none of the above