Q: In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D". 
[header] How to make a bed canopy [title] Get a bed frame of your choice. [step] This should be a wooden bed frame with solid posts at both ends of the bed. [title] Add the posts. <sep> (A) [step] Add wooden posts two to three feet apart from each other in the corners. [title] Join the circles of posts with yet another drywall-or mesh-board + staple-board cutting element and attach the post the way you did above. (B) [step] Buy four large 2x2 pieces of lumber. Screw them into the bed frame, or attach them. (C) [step] Place the supports on the outside of the frame, so that they will not be staggered. [title] Decide how big of posts to place your canopy over. (D) [step] Just the post itself should be placed alongside the bed frame. If it is flush against the wall, to discourage a little train to the toilet, you may want to add a few boards to match that.
A:
B