【单选题】

You work for one of the leading manufactures of country and western apparel. You are managing a project to redesign retail store layout to improve customer throughput and efficiency. Much of the project work must be done on site and will require the active participation of store employees. Many of these are lifelong members of a powerful union that has a reputation for labor unrest. One important component of your schedule must be ______ .

A、a resource capabilities matrix
B．buffers and reserves
C．a resource calendar
D．a resource histogram