What Defines Radial Symmetry

Multiple Choice

What defines radial symmetry?

A) Any plane of symmetry passing through the center of the organism splits it into equal halves.
B) Only four planes of symmetry passing through the center of the organism splits it into equal halves.
C) Only one plane of symmetry splits the organism into equal halves.
D) No planes of symmetry exist; the organism cannot be split into equal halves.