Which statement describes the graph of this function?

f(x) = -3 | x - 1 | + 12



A. The graph opens upward, and its vertex lies at (1, -12)



B. The graph opens upward, and its vertex lies at (-3, 1)



C. The graph opens downward, and its vertex lies at (1, 12)



D. The graph opens downward, and its vertex lies at (-1, 3)