Answer:
1st option
Step-by-step explanation:
the equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k ) are the coordinates of the centre and r the radius
here (h, k ) = (1, 3 ) and r = 4 , then
(x - 1)² + (y - 3)² = 4² , that is
(x - 1)² + (y - 3)² = 16
