The equation of the circle drawn with the focus of the parabola (x-1)²) 8y = 0 as its center and touching the parabola at the vertex is:

a) (x-1)² + (y-4)² = 16
b) (x-1)² + (y+4)² = 16
c) (x-1)² + (y-8)² = 16
d) (x-1)² + (y+8)² = 16