Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to do drywall repair [title] Purchase a joint compound. [step] The two commonly available joint compounds are lightweight and all-purpose. Lightweight compound dries quicker than all-purpose and requires less sanding.

Ending1: [substeps] When building drywall, smaller fibers are cleaner and easier to chip away. However, denser fibers are heavier and can require sanding. Ending2: [substeps] Specialized joint compound dries faster if only two components are purchased. Simple joint compound dries faster if two components are purchased together and the resulting compound has some durability. Ending3: [title] Begin mixing the compound into the drywall. [step] Mix the compound and let it sit for thirty minutes to one hour. Ending4: [substeps] Joint compound comes in a variety of container sizes, but be advised that smaller containers may cost just as much as the larger ones. If resealed properly, joint compound can be kept for up to 9 months for other around-the-house repairs if you end up with leftover compound.

Answer format: ending1/ending2/ending3/ending4