Identify the choice that uses one or more transitions to correctly indicate a causal relationship. A. After he drove from LA to San Francisco to see his​ girlfriend; therefore, drove right back to LA. B. He drove from LA to San Francisco to see his​ girlfriend, so he drove right back to LA. C. After he drove from LA to San Francisco to see his​ girlfriend, he drove right back to LA. D. He drove from LA to San Francisco to see his​ girlfriend, which energized him to drive right back to LA.