Which is the general form of the equation of the circle shown?
A
x squared plus y squared minus 4 x plus 2 y minus 4 is equal to 0B
x squared plus y squared minus 4 x plus 2 y plus 2 is equal to 0C
x squared plus y squared plus 4 x minus 2 y plus 2 is equal to 0D
x squared plus y squared plus 4 x minus 2 y minus 4 is equal to 0