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 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.
B

They are traveling to the event together and check into a hotel. The entire team spends time together before the event. two of the team members <sep> (A) are quick to start and begin to fence. (B) play volley ball with the team mates. (C) talk about their experience with the water polo event. (D) are dressed in some sort of uniform and they run on the stage and join the march.
C

[header] How to groom a difficult dog [title] Choose a medication or calming aid. [step] There are a variety of products you can use to help calm your dog down for grooming. Some are medications that your vet would prescribe. <sep> (A) Others are herbal supplements you can buy over-the-counter, though they should not be used without consulting the vet first. Some common medications and calming aids include : [substeps] Benadryl melatonin acepromazine thundershirt [title] Ask your veterinarian about calming aids. (B) Try : [substeps] Salicylic acid: this has a calming effect on dogs, and it's safe for your dog. If your dog is coughing or heartsore, try these other medications. (C) [substeps] Heat and cold helps to calm your dog's respiratory system by flushing toxins from the body into the lungs. These can help to make your dog less nervous and less likely to feel nervous. (D) For example, you may need to get your dog to use a ppm spray. One medication and one calming aid is a pet treatment treatment.
A