Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to oxidize a gummy bear [title] Wear eye protection (goggles or lab glasses), a lab coat, nitrile gloves, and a face mask. [title] Wear pants that cover the entire leg. [substeps] Shorts or skirts are not acceptable.

Ending1: Understand that if you intend to cook your bear, you must wear either pants, skirts or leggings in preparation. [title] Cook on high heat for 20 minutes and add one tablespoon of soy sauce. Ending2: Avoid denim, since it can dull the coloring if you use this very often. [title] Put a shoe or step onto the inside of the can, this will open up more vapor. Ending3: A pinwheel enthusiast does not wear any shorts. [title] Cover the hands with plastic clamps. Ending4: [title] Wear only closed toed shoes that cover the entire foot. [substeps] Sandals or open-toed shoes are not acceptable.

Answer format: ending1/ending2/ending3/ending4