Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to catch a crayfish [title] Buy a professional trap. [step] If you're new to catching crayfish, a professional trap is your best option. There are a variety of options when it comes to crayfish traps.

Ending1: Choose a trap based on your specific needs. [substeps] Regardless of the type of trap you're purchasing, make sure the entrance is less than 9.5 centimeters. Ending2: If you only want to catch crayfish in the wild, or you want to replicate the look in a nursery or backyard, a professional trap will work best. Most of the advantages of using a professional trap are that they don't affect the laws, which means the fish don't cause costly costly damage to your aquarium. Ending3: You can buy a variety of traps and tools and generally the best ones work best. A cast iron or stainless steel trap is ideal for catching crayfish. Ending4: Look around online for a reputable company and sample their traps for yourself before doing so. [substeps] Professional traps are sold for a price that will vary by company, but there are several brands including all-purpose and trap train.

Answer format: ending1/ending2/ending3/ending4