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". 

[EX Q]: A woman standing outside on the roof smoking a cigarette. she <sep> (A) blows the smoke in circles around it. (B) blows smoke and plays around with her hair. (C) rotates her hands back and forth, taking drags off her cigarette. (D) claps one hand while holding a laptop.
[EX A]: B

[EX Q]: [header] How to install custom firmware [title] Record the router's model and version number. [step] These numbers are usually located near the manufacturer's logo, underneath or in back of the router. Write down the model and version information for future use. <sep> (A) [substeps] If you are using windows xp (default operating system), the model number can be found in the start menu under " system settings. " skip all the discussion menus, and then go to system preferences. (B) [title] Obtain the router's ip address and default gateway for your computer system. [substeps] Determine the ip address and default gateway for a pc. (C) [substeps] " w " with the green background is the serial number for the model. " p " with the red background means " unhappy operating system. (D) [substeps] It is easy to determine what operating system is running on your router if you don't know the model. Copy the model from the registry to convert it to your operating system.
[EX A]: B

[EX Q]: [header] How to grow wildflowers [title] Choose a spot where wildflowers can thrive. [step] Wildflowers need good drainage, low soil nutrients, and high sun exposure. Pick an area of your yard that doesn't flood with rain and gets plenty of sun throughout the day. <sep> (A) [substeps] Beginner gardeners may choose a spot in the yard next to a flower pot or in the shade of a nearby tree. Keep in mind even this small area may not provide adequate shade. (B) A nursery or community garden is a good choice. [substeps] Many local flower shops include flower ponds that are also home to wildflowers. (C) Wildflowers can grow in poorer soil than other flowers. [substeps] Your spot should also have easy access to a garden hose or irrigation system, as you'll need to water it regularly. (D) [substeps] The best spot for wildflowers is a cleared area without a lot of puddles, as it will prevent the roots from sinking in. Draw up a loose garden line and divide the area into rows or sections, and attach garden stakes.
[EX A]:
C