PLZ HELP ASAP
The circle is centered at the point (4,5), and the length of its radius is 3. what is teh equation of the circle?

a) (x-4)^2 + (y-5)^2 = 9

b) (x+4)^2 + (y+5)^2 = 3

c) (x-5)^2 + (y-4)^2 = 9

d) (x^2-4) + (y^2-5) = 3^2