Rhonda is the chief executive officer of Target.Rhonda's responsibilities include decisions on product development, marketing and other significant business directions.Rhonda is subject to the approval and oversight of Target's board of directors.Rebecca is a Target manager whose duties include the firm's day-to-day hiring, firing, purchasing and selling.Susan is a purchasing manager for Target, whose daily activities are controlled by Rebecca, her manager.Aaron develops advertising campaigns for Target products according to Rhonda's instructions as chief executive officer of Target.Aaron has no dealings with Target customers or suppliers.Fritz revises employment contracts for Target on a contract-per-employment contract basis and is not otherwise subject to Target's control.Who is/are the principals in this hypothetical?Who is/are agents?Who is/are employees?Who is/are independent contractors?Explain the reasons for your answers.