With no explanation, chose the best option from "A" or "B". Dad brings his young son into the garage where he has set up a work space for them with wood and power tools, so they can build a bird house. Dad wants to introduce his son to woodworking and carpentry.

A: Dad shows his son how to properly and safely use a jigsaw and watches him make practice cuts on scrap wood before cutting the pieces for the bird house.
B: Dad hands him a jigsaw with the safety disabled and tells him to cut along the line.
A.