Which of the following is the correct order of coverage for an individual who is 65+ and covered by a GHP through current employment or spouse's current employment, while also being entitled to Medicare, and the employer has less than 20 employees?

A) Medicare is the primary payer, followed by the GHP
B) The GHP is the primary payer, followed by Medicare
C) The employer's insurance is the primary payer, followed by Medicare
D) Medicare is the only coverage available in this scenario