Write an equation in standard form for the circle shown.A) (x + 3)2 + (y – 1)2 = 7 B) (x - 3)2 + (y + 1)2 = 7 C) (x + 3)2 + (y – 1)2 = 49 D) (x - 3)2 + (y + 1)2 = 49

radius = 7
center = (-3, 1)

Equation for a circle is: r² =  (x-h)² + (y-k)²
where r = radius, (h,k) = center
fill in the values to get:
7² = (x+3)² + (y-1)²

Answer is C