Please choose the correct ending to complete the given sentence: Health: [header] How to compare hearing aid prices [title] Get a reference for a hearing aid professional. [step] Professionals who recommend and sell hearing aids are known as hearing aid professionals or hearing aid dispensers. The professional may be certified as an audiologist or have specialized training on hearing aids.

Ending1: To hire a professional, visit an audiologist's website and click " find a hearing aid " at the top of the screen. [substeps] These dispensers often require references from several people in your area, which is why they may not be as readily available online. Ending2: Hearing aid professionals include senior audiology professionals, physical therapists, health professionals, staff members, medical professionals, and nurses. [substeps] If you know someone who works in a job, explain your situation to them to find out what their job is and what you need someone to do so they can give you helpful information. Ending3: Ask representatives at a hearing aid office if they're hesitant to purchase hearing aids. [substeps] Only buy hearing aids that are certified by a government agency, such as the centers for disease control and prevention (cdc). Ending4: You can get a reference for a hearing aid professional from your family doctor. It's useful to consult with a hearing aid professional in person as they can offer recommendations on aids and help you compare prices.

Answer format: ending1/ending2/ending3/ending4