Which of the following is a result of shifting a circle with equation (x - 2)2 + (y - 3)2 = 25 up 2 units?  A. Both the x- and y-coordinates of the center of the circle decrease by 2.  B. The x-coordinate of the center of the circle increases by 2.  C. Both the x- and y-coordinates of the center of the circle increase by 2.  D. The y-coordinate of the center of the circle increases by 2.