What does the "Talent Triangle" refer to? a. The project teams' talent in managing the three constraints of scope, time, and cost b. The interaction of the three categories of plan-driven project roles: Executive Roles, Managerial Roles, and Associate Roles c. PMI's research findings that to be a successful project manager, one must develop knowledge and skills in technical areas, leadership, and strategic business management d. The interaction of the PMBOK 6e five process groups, ten knowledge areas, and forty-nine individual work processes