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 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.

A: D
****
Q: [header] How to read an ear reflexology chart [title] Get an ear reflexology chart online or refer to one in a book. [step] Before you can learn how to read an ear reflexology chart, you will need to get yourself a good one to consult. You can find ear reflexology charts online or in a reflexology book. <sep> (A) For best results, get a large poster size chart. The ear has 90 standardized reflexology points, so it can be difficult to read an ear reflexology chart if it is too small. (B) Read the chart aloud to yourself in the living room or in the shower, if you don't have a room to study in. [title] Read the chart in a library or in an online book. (C) [substeps] You will also need to see if any glaciers are present. These may be signs of a temperature problem. (D) [substeps] Place your index (pointer) finger on one of the pointer points at the top of a chart. Place your other finger on the other pointer point at the bottom of the chart.

A: A
****
Q: [header] How to install drywall on ceiling without a lift [title] Cut up 2 pieces of 2x4s of 3 feet (0.9 m) long. [step] And 2 more pieces the same length as the height on the ceiling. [title] Install the sheetrock. <sep> (A) [step] Measure out the first piece that is going to go up. Hopefully your room is square or you're going to be doing some adjustment. (B) [step] Check to make sure all the pieces are connected, then install studs. These areas are a little bit different for different levels, so keep that in mind. (C) [step] Get 7 pieces of 2x4s by cutting them up and 3 lengths. The height can be higher, lower, or as close as you want it to be to the ceiling. (D) [step] Use 2x4s of 2 feet (0.9 m) as supports. [title] Cut 4 boards from the second of the 3 pieces.

A:
A
****