You are currently managing multiple projects relating to a high-profile build-out of a major retail center. The project is extensive, with a two-year timeline. Bob is the project manager responsible for the east block of the build-out, while Sally is the project manager responsible for the north block of the build-out. Both Bob and Sally report to you. Your role can best be described as:

A. Lead project manager B. Department manager C. Program manager D. Portfolio manager