41. If you want to take material from a 0.8 x 1.8 x 15cm waste wood strip to make a small wood block as shown on the right, the square side length of this wood block is 1.8cm, and the hole in the middle is Ø 5.5mm. Which one is the proper working procedure？ (A) Drill first and then saw (B) First saw and then drill (C) Simultaneous sawing and drilling (D) The order of sawing and drilling does not matter