A circle has the equation (x−1)2+(y+2)2=16(x - 1)^2 + (y + 2)^2 = 16(x−1)2+(y+2)2=16. What is its center (h,k)(h, k)(h,k)?
(1,−2)(1, -2)(1,−2)
(−1,2)(-1, 2)(−1,2)
(1,2)(1, 2)(1,2)
(−1,−2)(-1, -2)(−1,−2)