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 .$_1H^1+_1H^3 \to _1H^2 +_1H^2$

Question

$\begin{array}{1 1} Q= 40.3\;Mev \;exothermic \\ Q= -40.3\;Mev \;exothermic \\ Q= 40.3\;Mev \;exothermic \\ Q= -4.03\;Mev \;endothermic \end{array}$