Which of the following is true of relational coordination? a. Relational coordination is the lowest level of horizontal coordination. b. Relational coordination is not a device or mechanism like other elements, but rather is part of the very fabric and culture of the organization. c. Relational coordination is the first device in the variety of structural devices to achieve vertical linkage. d. Relational coordination provides a standard information source enabling employees to be coordinated without actually communicating about every task.