A$)$ In a minimax tree, which branches $($or parts of branches$)$ should be cut off when using Alpha$-$Beta pruning? $[5$ Points$]$

B$)$ Why is it necessary to cut these branches?

$[1$ Points$]$

C$)$ Apply Alpha$-$Beta pruning to the following minimax tree. What value will end up at the root, and which nodes will be pruned? Show your comparisons for each leaf node to receive the full allocated credit for that node. $[9$ Points $-1$ point per node$]$