Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to purchase donor sperm [title] Research sperm banks online. [step] Type " sperm banks " or " cryo banks " into a search engine online. You will find different facilities along with customer reviews and experience stories.

Ending1: [substeps] Consider calling stores or organizations via phone. You can also ask questions to find out if they have male or female donors available. Ending2: Some banks might even offer an initial check. [substeps] Talk to people who own a nursing home or other facility you want to donate sperm to. Ending3: Locate the names or contact information of the facilities so you can find out if they handle donor sperm. Sperm banks are open to all types of professionals. Ending4: Read the reviews to get an idea of how the facility operates, then navigate to the facility websites to learn about their unique rules and practices. [substeps] You may not find facilities near you.

Answer format: ending1/ending2/ending3/ending4