Robert has written these instructional steps for using a matchbox:

Open one end of the box. Strike the match on the sides of the box. Take out a matchstick from the box after opening one end.

Which revision of these instructions is most effective?

A.
Strike the match on the side of the box.
Take one matchstick from the box.
Open one end of the box.
B.
Open one end of the box.
Take one matchstick from the box.
Strike the match on the side of the box.
C.
Take one matchstick from the box.
Open one end of the box.
Strike the match on the side of the box.
D.
Open one end of the box.
Strike the match on the side of the box.
Take one matchstick from the box.