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 read a screw thread callout [title] Read the numbers. [step] They will look something like one of these : [substeps] 4-40 x. 5 1/4-20 x 5/8 m3-0.50 x 10 [title] Interpret the first number. [step] The first number gives the major, or largest, diameter. <sep> (A) Next, determine the size of the screw thread you wish to use. Write these numbers down on several pieces of paper and trace around them. (B) It also tells you the larger diameter of a screw thread to create a series of polygons which share a small degree of overlap by a single number. [title] Separate the single digits in each string from each string. (C) [substeps] In unified threads (measured in inches) there are numbered diameters 0 through 10, with 0 the smallest and 10 the largest. ( diameters 12 and 14 may also be found, but are usually on older equipment and needed for repairs or restorations. (D) However, an " x " will bring more light up on an empty needle, so use a tray or ice scraper to fill it to feel the thickness of the screw. The next number tells us that the machine is a small amount bigger or larger than what we used it for.
[A]: C

[Q]: [header] How to choose parts for a budget gaming pc [title] Pick out a processor (cpu). [step] Choose your cpu by looking at five things-performance, speed, cores, price, and durability. In general stick to i5 and ryzen 5 processors if you have a budget between $800 and $1500. <sep> (A) [title] Choose a processor that has a floppy protractor. [step] Floppy processors are these are tiny devices that only have one or two critical parts. (B) Since charging for a smartphone or gaming console has some extra impact, you should choose the fastest processor possible. A 350 watt processor will feel like a cheap one. (C) 8.2 ltv or blu ldb10 cores are other common cheaper choices. [title] Pick what you are absolutely listening to. (D) If you have a lower budget, buy a pentium, ryzen 3, or fx series processor. [substeps] Look at benchmarks and reviews for your selected cpu and all components you want to buy before you buy them to avoid ending up with a poor component.
[A]: D

[Q]: [header] How to use ivermectin [title] Use ivermectin against certain worms. [step] Ivermectin is the drug of choice against several different kinds of worms. The two most common worms treated by this medication are strongyloides stercoralis and onchocerca volvulus. <sep> (A) [substeps] Strongyloides sterandrinds are considered normal doses for severe cases of parasites that might have been avoided with the medication. Onchopropyl methylcellulose is also an additive to this medication. (B) [substeps] Strongyloides stercoralis: this worm is prevalent in northern parts of the united states and canada. It is found on soil and prefers warm humid conditions. (C) [substeps] Strongyloides steroid drugs target the stomach lining-doing this provides minimal blockage, with the rotation of the worm and lowering serotonin, which therefore reduces the digestive process in the worm. [title] Learn about the other drugs that were shown to work. (D) [substeps] Strongyloides are those that are found within worms and then paste a barrier barrier to prevent the worm from entering their eggs. Strongyloides stercorindermoids are injected into the worm once every 12 to 36 months.
[A]:
B