Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to groom a longhair dog [title] Get your materials ready. [step] A while before you begin the grooming process, you need to stock up on brushes, combs, clippers, shampoos, and conditioners. [substeps] For brushes, bristle brushes can be used on all coat types.

Ending1: Choose handle-less bristle brushes, and a comb with rough bristles for a sleek, proper coat. For human hair: clean the bristles with soap and water, or soak them in water and wipe them off with a towel. Ending2: Hair wire combs are ideal for longhair with bristle areas. These combs are porous and will not push dirt back into your coat. Ending3: In general, the longer the coat the more widely spaced and longer the bristles should be. Wire-tipped brushes without rubber ends are also a good choice for dogs with long, coarse, or curly coats. Ending4: Use rubber gloves if you're going to be brushing your longhair. For combs, only use medium to high rollers.

Answer format: ending1/ending2/ending3/ending4