QUESTION$2$

For the game tree shown below, which branch$($es$)$ will be pruned by alpha$-$beta pruning? If the pruning happens high up in the tree, only list the branch at which the pruning actually happens. For example, if branch a is pruned, don't include $c$ and $d$ in your answer.

$$ a $L_2\frac{b}{{?}_{\frac{?}{?}}{?}_{3.c}}C{A}_4{d}_5.$e ${}_{6.f}{}_7.$ No branches are pruned