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". 

[Q]: [header] How to find the number of a blocked call [title] Get an private branch exchange (pbx) account. [step] One option is asterisk, a free, open source software. Another is switchvox. <sep> (A) This will also work better than 200 blackwire. If you buy one, it will work with the same account ($ 0.11). (B) The pbx is considered to be a free exchange. While this service typically does not have much use for a desktop account, it gives you access to many anonymous call accounts. (C) A pbx converts your computer into a telecommunications device and will allow you to manipulate incoming call data to identify blocked callers. [substeps] Before embarking on this method ensure that you thoroughly understand the technical challenge it presents and the potential financial burden it incurs. (D) Without switchvox here you are on better business. No other option is available to get a contact number from an online website.
[A]: C


[Q]: A graphic shows and then photos follow of a girl growing up with horseback riding. Three years after those photos the girl moves and she is shown riding horses. the girl <sep> (A) is shown with other girls posing with some awards for horseback riding. (B) then takes an exercise class and the lady shows her how to ride with the palomino. (C) continuously rides down the country with other riders. (D) is then interviewed by a man and she smiles and claps her hands.
[A]: A


[Q]: [header] How to dream [title] Decide you are going to remember your dreams. [step] Some people just have more trouble remembering them than other people. If you're one of those people, it can help to tell yourself you're going to remember it before you go to sleep. <sep> (A) However, the longer you wait to remember a dream the more likely you are to have one. [substeps] Remember what you wanted to think about when you went to sleep. (B) It may seem silly, but this conscious step can help signal your mind to remember. [substeps] It may take a few weeks for this process to work. (C) [substeps] If you've been getting repeat dreams every night since winter break, that might not work. Remind yourself regularly that you want to " remember " your dreams. (D) [title] Come up with a breakfast regimen you can follow to get from tonight to this morning. [step] Toast and have a cup of water and orange juice.
[A]:
B