【单选题】

The perpetual spinning of particles is much like that of a top, with one significant difference: unlike the top, the particles have no need to be wound up, for ______ is one of their ______ properties.
A．(A) revolution...radical

B．(B) motion...intangible
C．(C) rotation...intrinsic
D．(D) acceleration...lesser
E．(E) collision...hypothetical