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". 

Example Input: [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.
Example Output: B

Example Input: [header] How to become a journeyman electrician (us ) [title] Familiarize yourself with possible lines of work. [step] Journeymen electricians install electrical systems in homes and businesses. They inspect and repair wiring, transformers and circuit breakers. <sep> (A) As a journeyman electrician, you could work as an outside lineman or an inside wireman. Once you have worked as a journeyman for a period, you can eventually become a master electrician. (B) The specific skills required will vary according to the job and the area. [substeps] Apprenticeship law permits journeyman electricians to complete eight years of apprenticeship courses. (C) Whatever the position you do as a journeyman electrician, as long as you understand the skills necessary to work in a home and hire an electrician to work under your supervision, you're considered a professional. This is where your skills and training developed as an apprentice come in handy. (D) How you would start as a journeyman electrician can greatly impact your career in the future. [substeps] Begin practicing as soon as possible, and work your way up on the ladder.
Example Output: A

Example Input: [header] How to overcome neuroticism [title] Identify your emotions. [step] You might be someone who needs to be perceived as " always friendly " or " never angry. " perhaps you behave neurotically when faced with an emotion that doesn't quite fit into your perception of yourself, then block it or evade it in some way. <sep> (A) [substeps] You might isolate yourself by dendenting your feelings (in the worst case scenario) or by ignoring them. For instance, you might intentionally ignore your parents. (B) If you want to overcome your neuroticism, learn to acknowledge and feel your emotions. [substeps] For example, if you're feeling sad, acknowledge that you feel sad. (C) Another benefit of embracing neuroticism is that even when you ignore your negative emotions, you get rid of them. [substeps] If you can't control your emotions, allow yourself to react to them or embrace them by trying to do things you wouldn't ordinarily do. (D) It is up to you to decide what is your emotional response to this situation. [substeps] As independent as individuals can be, social interactions with others can provide you insight into how you think and act, which may help you to overcome your neuroticism.
Example Output:
B