Detailed Instructions: In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".
Q: [header] How to treat macaw wasting disease [title] Recognize gastrointestinal and neurological symptoms of pdd. [step] Macaw wasting disease or proventicular dilatation disease (pdd) can be recognized by a range of digestive and nervous system malfunctions. Your bird may start regurgitating food or simply look very depressed. <sep> (A) In some species, such as macaws, the gastrointestinal symptoms show up first and it takes a while for neurological symptoms to arise. In cockatoos, you see the neurological signs first. (B) There is also a possibility of sudden infant death due to hormonal imbalances. If your bird is sluggish, seems agitated, and has fussy headgear, it could cause pdd. (C) This is most common in younger birds that are recovering from pdd. Birds with pdd may have a hard time making changes to food and mineral intake due to liver damage. (D) Birds with pdd also may experience seizures. Symptoms of pdd include : [substeps] Vomiting diarrhea sluggishness weakness [title] Look for early symptoms of pdd and mesothelioma.
A:
A