Consider the nuclear equation below. Superscript 124 subscript 56 B a right arrow superscript 124 subscript 55 upper C s plus question mark. Which completes the nuclear equation? Superscript 0 subscript plus 1 e. Superscript o subscript negative 1 e. Superscript 1 subscript 0 n. Superscript 1 subscript 1 upper H..