Please choose the correct ending to complete the given sentence: Health: [header] How to pop a blood blister [title] Pop larger blood blisters. [step] You should try to refrain from popping blood blisters if possible. However, if it gets too painful, you can pop larger blood blisters.

Ending1: If your blood blister is larger than a pea, or it is causing significant discomfort, pain, or interfering with walking or working, you can carefully pop the blood blister. [substeps] You should know that this can significantly increase the risk of infection, so be very careful and follow the instructions as closely as possible. Ending2: To minimize the possibility of getting blood blisters, you can pop smaller blood blisters. [substeps] Do not pop larger blood blisters on your hands or feet. Ending3: Popping your blood blisters could cause irritation. You can pop the puncture wounds on areas you're not used to. Ending4: Open a vein and insert a needle-a syringe should be provided-through the tissue near the wound, typically through a vein. Drag the needle to bleed the blood into the blood blister, and then hold it there for 15 to 30 seconds.

Answer format: ending1/ending2/ending3/ending4