Given $x ^ { 2 } + y ^ { 2 } = 4$

Multiple Choice

Given $x ^ { 2 } + y ^ { 2 } = 4$ , use the algebraic tests to determine symmetry with respect to both axes and the origin.

A) y-axis symmetry only
B) x-axis symmetry only
C) origin symmetry only
D) x-axis, y-axis, and origin symmetry
E) no symmetry