A company wants to construct a new central distribution center (DC) to supply products to two regions. The coordinates of region A are (200, 50) and the coordinates of region B are (100, 150). The product demand from region A is 75 units, while that of region B is 70 units. Using the center-of-gravity method, which of the following coordinates correspond to an optimal location for the new DC? A. (50, 200) B. (100, 150) C. (150, 100) D. (200, 150)