Which of the following represent the correct order of decreasing lattice energy?

Question

$\begin{array}{1 1}(a)\;LiF > LiCl > LiBr > LiI\\(b)\;LiI > LiBr > LiCl > LiF\\(c)\; LiI > LiBr > LiF > LiCl\\(d)\; LiCl > LiF > LiBr > LiI\end{array}$