Write the Equation of the Circle That Satisfies the Following

Write the equation of the circle that satisfies the following conditions. Express the final equation in the form x ² + y ² + Dx + Ey + F = 0. Center at the origin and r = 4

A) x ² + y ² = 0
B) x ² - y ² - 16 = 0
C) x ² - y ² + 16 = 0
D) x ² + y ² + 16 = 0
E) x ² + y ² - 16 = 0