想請問一題gwd數學

jennyyc1127

    

In the rectangular coordinate system, points (4, 0) and (–
4, 0) both lie on circle C.  What
is the maximum possible value of the radius of C ?

    

 

    

A.    
  2

    

B.     
  4

    

C.     
  8

    

D.    
16

    

E.     
There is no finite maximum value.

我覺得的答案是E, 但是答案是B....

RBY

我觉得也是E...

yuromeo

我也觉得是E