Help 3 ​

The answer is the second choice. 

This is the standard form of a circle, so it must be the second choice. 

x^2  - y^2  =  16   

This is a hyperbola that intersects the x axis in two places and has a center of (0,0)

This hyperbola has two axis of symmetry.....the x axis and the y axis

So.....the last answer is correct