You will be given a definition of a task first, then some input of the task.
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".

[header] How to buy an organic crib mattress [title] Check a store specializing in organic goods. [step] Natural health stores or organic retailers sometimes carry products for new moms. If you frequent an organic store with good selection, ask the employees if they carry crib mattresses. <sep> (A) Alternatively, if you're looking for a bed brand that does not use traditional materials, try to save some of your own. [substeps] If you're in the market for a newborn crib mattress, you may be tempted to buy a crate that has togs. (B) Even if they don't, an employee might know local options. [substeps] If you're friends with other eco-friendly moms, ask them where they bought their crib mattresses. (C) [title] Look for a mattress that matches your baby's size and personality. [step] You'll want to make sure it matches your baby's particular needs. (D) You will have to look at the labels to get a good idea of the quality of the product. [substeps] Don't buy a crib mattress that has been washed at least four years ago.
Output:
B