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 attract birds [title] Research birds in your area. [step] Find out what types of birds live in your area or are likely to come to your property through migration. You may want to obtain a field guide to the area in order to know which birds to attract. <sep> (A) [substeps] If you cannot visit wild bird farms, your local wildlife center or bird rescue organizations may let you search their website. Birds can also be found in bird mills, which are people who collect birds that migrate to their farm. (B) Aim to create an environment that can support many different species. Bear in mind that you can attract different species depending on the season, as well. (C) [substeps] If you live in a rural area, you may want to establish a garden area that is open to birds. If there are birds that occupy your property, you will be less likely to attract them. (D) You can also keep a bird journal that you can use with your data. [substeps] Make the entries on the journal one page long.
Output:
B