Definition: 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". 
Input: [header] How to make apple baby food [title] Look for organic apples. [step] Because apples are part of the " dirty dozen " and contain lots of pesticides, it is a good idea to purchase organic apples at the grocery store. Pesticides are associated with diseases of the nervous system, the endocrine system, cancer. <sep> (A) [substeps] Common diseases of the nervous system may include the pancreatic tract, glaucoma, apnea, and aspergillosis. Apple fed apples tend to be slightly pesticide free. (B) Consider choosing only organic apples over other types. [title] Check for fatty, greasy, heavily fleshy, and coated apples. (C) [substeps] Instead of picking up one apple from a shelf, look for a ripe apple with a nice indentation in the center. Insert your finger into the indentation to reveal the apple underneath. (D) So when possible, look for organic apples. [title] Choose apples with a mild, sweet flavor, such as gala, braeburn, fuji or red delicious.
Output:
D