Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to become a hockey referee [title] Purchase the necessary gear. [step] All officials will need to own their own gear and bring this gear with them to every hockey game. You will need to purchase hockey skates, an officials hockey sweater, a black hockey helmet, shin guards, elbow pads, and a whistle.

Ending1: You will also need to have a hockey identification card. [substeps] These can be found either online or as a contact information or by giving them to the referee first. Ending2: [substeps] Hockey hockey gloves are the most effective but also the most expensive equipment. There is no requirement to buy gloves; your equipment is as stylish as it is worth. Ending3: [substeps] All officiants must carry hockey gloves. Hard up hockey gloves are illegal to wear at hockey practice. Ending4: Keep all of this equipment in a single bag so that you never forget something important. [substeps] Be sure to sew your referee crest onto your hockey sweater before your first match.

Answer format: ending1/ending2/ending3/ending4