Design a class which represents a Circle in the $($x$,$y$)$ coordinate plane. A Circle object is initialized with

three input arguments. The center of the circle specified as the first two inputs $($x$,$y$)$ and the radius of

the circle. By default, the circle will be centered at $(0,0)$ with a radius of $1($that would be implemented

in the constructor$).$ The constructor should be consistent with the following logic:

c $=$ Circle$(0,0,1)$ # circle centered at $(0,0)$ with r$=1$

c $=$ Circle$(1)$ # circle centered at $(1,0)$ with r$=1$

c $=$ Circle$(1,1)$ # circle centered at $(1,1)$ with r$=1$

c $=$ Circle$()$ # circle centered at $(0,0)$ with r$=1$