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 reuse [title] Don't recycle your next empty jug of milk. [step] Poke holes in the top of the lid. Then, fill it with water, screw the lid on and use it as a watering can. <sep> (A) [title] Use less using jugs than you think you need to. [step] Often, items such as juices, sterilizers and acids recycle too fast; try using the one they own when they need to remove something bad. (B) [substeps] Remember to refrigerate milk jugs without lids. Make sure that the lid isn't too tightly lined, you will need it for your construction projects. (C) [title] Save a large square egg crate, like the ones you find in bulk stores. [step] Set it on your desk and place your laptop on top. (D) This is what you use to water your plants while reusing the container. [substeps] Other containers made specifically for reusing the milk jug can be used instead.

Ex Output:
C


Ex Input:
[header] How to dry out wet currency [title] Find a dry space. [step] Make sure the bills are kept in a room with good air circulation to lessen the time it takes for the bills to dry. Keep the bills in an area where they won't get blown away or easily lost. <sep> (A) [substeps] At home, you will be able to air dry your currency if your bills stay wet. [title] Store your currencies in a dark, dry place. (B) Avoid putting the bills near open air vents or next to tight crevices where the bills could fall. Try arranging them on the edge of a sink so the water will drip to the ground. (C) Good air circulation should not damage the bills, but it shouldn't be expensive either. [title] Make sure the area is clear of wet or air-logged fabric or paper. (D) [title] Keep your bank account secure if possible. [step] Also, to help the currency from drying out, make sure the extra cash is well hidden in the bank so it isn't moved quickly to prevent the contents from spoiling or breaking up in transit.

Ex Output:
B


Ex Input:
[header] How to weld lead [title] Prepare the lead for welding. [substeps] Before lead can be welded, it must be cleaned. This is especially important if you are replacing an existing piece of lead, such as an old pipe. <sep> (A) Be sure you don't use chemicals. [title] Remove the lead from the pipe each time you weld it. (B) Clean the lead thoroughly with a wet cloth before welding. It is important that the lead is clean when you start doing welding. (C) Thoroughly rinse the lead with clean water prior to welding it. Prime and clean the pipe as you go. (D) Use a sharp knife to remove any debris or crusty lead from the area where the lead will be welded. In addition, you may want to consider using a piece of steel wool to completely polish the area.

Ex Output:

D