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 mesquite grill [title] Decide between chips, chunks, and logs. [step] Grilling wood is generally sold as chips, chunks, and logs. Pick an appropriate wood type depending on the type of grilling you're doing and the size of your grill. <sep> (A) Plan ahead, since chips are medium, and logs are fairly light, unless you intend to choose something larger. [title] Remove the cast iron skillet from the grill and pre-grill it. (B) [substeps] Chips, chunks, and logs are porous and can be safely handled on your grill, but they cannot hold heat as long as they are hand trimmed or cleaned prior to grilling. If you are grilling with cedar chips, these are the best riers to use. (C) [substeps] Chips have a relatively short burn time, so only use them as a last resort if other sources of mesquite are not available. Chunks are fist-size pieces of wood and work well for those in the city with smaller grills. (D) [substeps] Select snow chips, pine chips, or native aspen chips. Alternatively, pick a soft/medium wood like hickory, birch, or aspen chips.
C