Multi-choice problem: Choose from the options at the end, and answer how do you do this: How do you cut down a tree?

(A). Using a chainsaw, carefully cut out a wedge in the tree in the direction you want it to fall, gradually making it bigger and bigger.;
(B). Using a pocket knife, carefully cut out a wedge in the tree in the direction you want it to fall, gradually making it bigger and bigger.;
(A).