Plz im being timed

the point (8,5) lies on a circle and the center of the circle is at the point (7,5).

what is the equation of this circle?

a. (x - 7)2 + (y - 5)2 = 1

b. (x - 5)2 + (y - 7)2 = 1

c. (x - 7)2 - (y - 5)2 = 1

d. (x - 5)2 - (y - 7)2 = 1

the answeer is a.