The Q value of a nuclear reaction $A+b=c+A$ is defined by $[m_A+m_b-m_c-m_d] C^2$ where masses refers to the respective nuclei. Determine from the given data the Q value of the following reaction and state whether the reaction are exothermic or endothermic . $_6C^{12}+_6C^{12} \to _{10}Ne^{20} +_2He^4$

Question

$\begin{array}{1 1} 46.1\;Mev\;exothermic \\ -46\;Mev \;endothermic \\ 4.61\;Mev\;exothermic \\ -4.61\;Mev\;endothermic \end{array}$