Respuesta :

Answer:

B. 4 units

Step-by-step explanation:

(x- 5)^2 +(y – 3)^2 = 4^2

This equation is in the form

(x-h)^2 + (y-k) ^2 = r^2

where (h,k) is the center and r is the radius

The radius is 4

4 units is the awser