Each of the Following Is an Attribute of the Kaluza-Klein

Multiple Choice

Each of the following is an attribute of the Kaluza-Klein theories EXCEPT one. Which one is the EXCEPTION?

A) The theories have at least four space dimensions.
B) The dimensions we cannot see are curled tightly into loops.
C) Different loop vibrations correspond to particles with different masses.
D) In the new theories, gravitation no longer has an effect on space.