Detailed Instructions: 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".
Problem:[header] How to make pvc demo weapons [title] Cut the pvc pipe to the desired length. [step] The length and width will vary by the martial art you are demonstrating. For example, monkey kung fu uses a 3-4 foot (0.9-1.2 m) staff. <sep> (A) For experienced martial practitioners, the lengths of your staffs should be to inches (1.3 to 0.8 cm). [title] Cut the pipe for the end of the apparatus. (B) Some people find a staff person' too long' for the length and width ratio. If you have at least 15 or more inches to spare you may just want to start off with a longer staff. (C) Be careful not to cut the pipe in two, or it might change the material. [title] Add wood, sand, steel, finely grained asphalt or other non-galvanized stuff to your base. (D) [title] Glue the pvc end-caps on with on pvc cement. [step] This will make sure everything stays put.
Solution:
D