instruction:
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". 
question:
[header] How to download microsoft office 2010 [title] Visit the office 2010 download page. [step] Microsoft office can be legally downloaded from microsoft's website as long as you have a valid 25-character product key. To find it easily, search for " using your office 2010 product key ". <sep> (A) [substeps] If you don't have a csso account, you may have to create one. You will need to verify your identity with microsoft office 2010. (B) [substeps] Office 2010 is no longer available for purchase or as a trial from microsoft. You can still buy boxed copies from other retailers. (C) [substeps] Leave one or more lines between the tabs on the homepage and the window you will be downloading to provide information about what you want to download. [title] Open the primary file you wish to download. (D) [title] Enter the windows code to install microsoft office 2010. [title] Click on the save file to run the pc then re-open microsoft office 2010 now to continue.
answer:
B


question:
. four bikers at the start of the line <sep> (A) get no a jump. (B) are wearing different colors of uniforms and helmets, they are about to get start the race. (C) leave and race towards a parking lot on the right. (D) go on the parallel bars but they can't take off their bikes.
answer:
B


question:
[header] How to prevent a child's temper tantrums [title] Maintain daily routines. [step] Toddlers and preschoolers need to feel comfortable and secure, and they do not deal well with unpredictability. Keep things predictable by setting regular bedtimes and mealtimes. <sep> (A) Hunger and sleepiness are probably the most common triggers of tantrums, and these can largely be avoided by keeping a regular schedule. Try to wean toddlers off unscheduled naps, and minimize the occurrence of extended absences from familiar surroundings. (B) Try to allow earlier bedtimes and nights, which are not predictable, for toddlers. [substeps] Remember that exposing your toddler to activities her interest will enjoy for the most part or manipulating her mind and body can help reduce your child's frustration and frustration. (C) Be a role model for an toddler because these are a simple, relaxing process. [substeps] If no one is around, have a rule that consistently follows rules is mandatory in the education system. (D) Stick to changing the adults' bedtimes and routines. [substeps] Set a sleep schedule for your child that feels comfortable and like the normal bedtime.
answer:

A