The correct answer is D: The control operator and the station licensee. According to FCC Part 97.103, when the control operator is not the station licensee, both parties share responsibility for the proper operation of the station. The control operator is responsible for the actual operation during their control, and the station licensee is responsible for ensuring the station is properly set up and that the control operator is qualified. This shared responsibility ensures accountability at both levels. The licensee must ensure the station is compliant and that qualified operators are designated. The control operator must ensure proper operation during their control period. Both can be held accountable if violations occur, though the specific responsibility depends on the nature of the violation.