Which of the following is the fusion reaction [MP PET 1993]

• A.   \[_{1}{{H}^{2}}{{+}_{1}}{{H}^{2}}{{\to }_{2}}H{{e}^{4}}\]
• B.            \[_{0}{{n}^{1}}{{+}_{7}}{{N}^{14}}{{\to }_{6}}{{C}^{14}}{{+}_{1}}{{H}^{1}}\]
• C.            \[_{0}{{n}^{1}}{{+}_{92}}{{U}^{238}}{{\to }_{93}}N{{p}^{239}}+{{\beta }^{-1}}+\gamma \]
• D.            \[_{1}{{H}^{3}}{{\to }_{2}}H{{e}^{3}}+{{\beta }^{-1}}+\gamma \]