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 girl comes onto the screen and explains that she will be making some lemonade and shows the things that are needed. she <sep> (A) is attempting to take the lemonade from two cups that are standing outdoors, and attempting to make lemonade. (B) then walks to the sink and gives a very animated tutorial about the process and how to make them. (C) scoops some powder into a pitcher of water. (D) then returns to her strawberries and cucumbers and bashes them with a cucumber cocktail as well.
[EX A]: C

[EX Q]: [header] How to recognize symptoms of sickle cell disease (scd ) [title] Get tested. [step] Sickle cell disease can be detected with a simple blood test, so if you think you may have the disease, see a doctor to get tested right away. In the united states, all newborns are required to be screened for sickle cell disease. <sep> (A) [substeps] The screening process is lengthy and requires some paperwork so a doctor can make sure they're perfect. In order to receive diagnosis or treatment, the doctor must first perform a screening test. (B) The more advanced the developing disease, the more likely it is that you may have sickle cell disease. It is a serious disease that causes weight gain, and may affect when you are pregnant. (C) The centers for disease control and prevention (cdc) website has more information on the disease than it does on its own. [title] Be aware of your potential risk factors. (D) This is because early treatment is very beneficial to patients. [substeps] It is also possible to do prenatal screening for sickle cell disease by testing fetal tissues that are collected by chorionic villus sampling or amniocentesis.
[EX A]: D

[EX Q]: [header] How to hurdle [title] Stretch. [step] If you don't stretch, you can become seriously injured. ( pulling hamstrings are common ) [title] Run a few practice hurdles. <sep> (A) [step] One jumper runs out of breath pretty quickly. In this case you will need to keep the speed up and relax to improve your technique. (B) [step] Make sure you have a sufficiently good upper body. If that's not possible, try to slow down and relax. (C) [step] Make sure you have your lead and trail legs figured out before the race starts. The lead leg is the leg that goes over the hurdle extended before your body. (D) [step] Build up and stretch your right and left foot until your hamstrings are strong. [title] Tap the bell lightly and roll up toward your right.
[EX A]:
C