The vertex of the parabola below is at the point (4, -1). Which of the equations below could be the one for this parabola?  
A.x = 2(y - 4)^2 - 1 
B.x = -2(y + 1)^2 + 4 
C.x = 2(y + 1)^2 + 4 
D.y = -2(x - 4)^2 - 1