GMAT Sentence Correction (SC) | Re: SC Revision: Fusion the process through which the sun produces heat

Fusion, the process through which the sun produces heat and light, has been studied by scientists, some of whom have attempted to mimic the process in their laboratories by blasting a container of liquid solvent with strong ultrasonic vibrations.

A. Fusion, the process through which the sun produces heat and light, has been studied by scientists,

B. Fusion, the heat and light produced by the sun, has been studied by scientists,

C. Fusion, the process through which heat and light are produced