Please choose the correct ending to complete the given sentence: Health: [header] How to boost your immune system during chemo [title] Visit with a registered dietitian for recommendations. [step] When your immune system is compromised, you need to pay special attention to your diet. While no one food can improve your immune system, you need to give it the nutrients it needs, and a dietician can help you figure that out.

Ending1: [substeps] Even if your immune system doesn't get the nutrients it needs, most dieticians and doctors know that everything counts. Whenever you're trying to boost your immune system to compensate for chemo, talk to an dietician. Ending2: A dietician can help you research nutrition tips before you start your diet, and help you find healthy options for your meals. Ask anyone you know who will help you make healthy, well-balanced meals, and get the name of a registered dietitian. Ending3: [substeps] Ask your oncologist to refer to you to a dietician. [title] Eat good quality protein to build white blood cells. Ending4: [substeps] Ask your doctor for a referral to an dietician. Ask what they recommend for how you treat your sick patients, such as with medications and diet.

Answer format: ending1/ending2/ending3/ending4