Please choose the correct solution to the question: How to insert knobs on drawers.

Solution1: Mark each drawer where you would like the knobs to go into. With a thread make sure that you mark the holes in a straight line. With a drill, drill in the holes. Insert door knobs into holes.

Solution2: Mark each drawer where you would like the knobs to go into. With a ruler make sure that you mark the holes in a straight line. With a drill, drill in the holes. Insert door knobs into holes.

Answer format: solution1/solution2
Answer: solution2