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 Input:
[header] How to paint masonry walls [title] Remove any flaked or peeling paint from the masonry. [step] If the wall has already been painted, you need to remove any old paint that is loose, peeling, or flaking away. On an exterior wall, this is most efficiently done with a sandblaster. <sep> (A) New paint must be removed from the wall first, gently scraping around the edges with a rat-tail tail reciprocating scraper. This is most often done on exterior paint walls that are still meant to protect it from debris. (B) In areas where a sandblaster would be too messy and cumbersome, loose paint can be removed with a stiff wire brush and a paint scraper. [substeps] Failing to remove loose and peeling paint can result in the paint flakes mixing in with your fresh coat of paint and marring the finish. (C) [substeps] Make sure to turn off the water. Do not flush the wall down the drain. (D) If there is a paint-resistant paint strip still clinging to the wall, it may be painted to the wall as well, but not directly under it. [substeps] Using a sandblaster may be wise, but if the paint is not taking off, it may be better to start by sanding lightly.

Ex Output:
B


Ex Input:
[header] How to carry a hedgehog [title] Don't be nervous. [step] Hedgehogs are great at sensing fear, and if you are scared and nervous, they will be scared and nervous, making it a bad experience for everyone. [title] If you are going to handle a hedgehog, pick it up. <sep> (A) [step] Grasp its tail firmly with two hands placed on either side of its spine and hoist it up on a sturdy, sturdy surface. [title] Hold your hedgehog's whiskers on the inside of your hand. (B) [step] This is a relatively simple thing to handle-a hedgehog can bite you if you touch it. Instead, just hold it close to your body, and let go, be aware of how many times you are holding your pet. (C) [step] Place your hand on the animal's shoulder, gently turn its head towards you, and release a calming word. Walk slowly around the hedgehog, holding the animal securely and gently holding the neck and head. (D) [step] Don't mess around and try to poke it awake or make it aware of your presence by hovering your hand. Hedgehogs are prey animals with poor eyesight, and this is seen as a threatening gesture.

Ex Output:
D


Ex Input:
[header] How to fish in a river [title] Get a good quality fishing pole. [step] A good fishing pole would be one that has a sturdy, fiberglass or graphite, a line that won't snap easily, and other features that actually work. Choose a good size for the fishing pole, such as is 8 feet (1.5 meters). <sep> (A) The longer the heavier the line, the more difficult the fishing should be. Choose a pole that can be tied to the three lengths of the rod. (B) [title] Choose good bait to take for the fish you're looking to catch. [step] Fish that live in rivers, such as sturgeon, bass, carp, catfish, etc. (C) You will be using a wider rod for shallower water, and the longer line for deeper water. [substeps] Recommendations are the thickest fishing pole that fits the sphagnum moss. (D) [substeps] How you fish is a big time! You are going to be fishing in a river. If your fishing line is too long, you'll have a lot of trouble measuring it.

Ex Output:

B