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".
Q: [header] How to hang a muffler [title] Purchase a new muffler hanger. [step] Also called muffler straps, muffler hangers are thick rubber loops. Your exhaust system may require more than 1 hanger, so look underneath the car to see if it requires any additional muffler hangers. <sep> (A) [substeps] Sturdier muffler hooks are recommended because they are free from rust. [title] Use a plywood pull-up housing to make the threads. (B) [substeps] Muffler straps (often called muffler rings) are hard-material straps worn at the ends of mufflers. Muffler loops will usually have too many " unlocks " to allow your muffler hooks enough room to hang. (C) [title] Purchase a piece of thin wire, approximately 2 " (5 cm) long. [step] This wire is ideal for attaching muffler bulbs. (D) Buy replacements for any that are broken or weakened. [title] Install your muffler if you have just purchased a new one or make sure it is installed properly if it is already installed.
A:
D