Please choose the correct ending to complete the given sentence: Work World: [header] How to become a certified doula [title] Learn about the career. [step] Before you embark on the path to becoming a doula, you'll want to learn a bit about the career. Being a doula can be rewarding, but also stressful.

Ending1: [title] Choose a college or university or major for your certification. [step] An american doula from england, georgia, and alaska will follow a bsw certification program in the field of medicine. Ending2: You want to make sure the path is right for you before pursuing training and certification. [substeps] As a birth doula, you will provide emotional support during labor, and also help women with breathing and delivery. Ending3: You'll have more to do than you need to and be extremely responsible. As a doula, you'll have to take on a world of challenges in order to establish an successful business. Ending4: As a certified doula is potentially a financially demanding profession, it can be challenging to establish your credentials, so it's important that you know what you want. [substeps] You can go to medical school, complete some classes during your residency, and get an associate's degree in pharmacology or business.

Answer format: ending1/ending2/ending3/ending4