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".

[header] How to handle a dog's nightmares [title] Decide whether to wake up your dog. [step] When your dog is having a nightmare, your first instinct may be to wake up your dog. However, this isn't always the best idea. <sep> (A) Waking up your dog would disrupt its sleep cycle, causing it to feel confused and possibly lash out at you. It's often better to let a dog continue sleeping through the nightmare. (B) If your dog's nightmares persist and you aren't willing to take the time to monitor your dog, it might be best to enlist the help of a veterinarian. There are several reasons for this : [substeps] When your dog is having a nightmare, your own judgment is impaired. (C) If your dog is claustrophobic or is fear fearful, you will want to be as calm as possible while your dog is having the nightmare. If the fear is mild to moderate, choosing an alternative position or location may not be a good idea. (D) While nightmares are real, traumatic experiences can also happen. [substeps] Nightmares also occur in dogs that have nightmares caused by trauma.
A

[header] How to spot an online scam [title] Ask yourself: do they require you to pay money up front? [step] If they are requiring any sort of up front payment to use their services, it is almost always a scam. Many of them will claim that it's for the cost of training, etc. Most of that is just lies. <sep> (A) More often than not, the scammer will take your money and run. [title] Ask yourself: do they promise that you will become rich overnight? [step] Let's face it. (B) They may also require you to pay them a fee to do the work of the scam. [title] Start by taking note of the offer terms. (C) If you fail to pay them back, they won't actually use the services they have. Sometimes, scammers simply want to get their money from you to start their scam. (D) Do not discuss this with anyone else, unless you know for sure that it is indeed a scam. [title] Determine whether you're being harassed.
A

[header] How to start a pellet stove [title] Read the instruction manual first. [step] An automatic start pellet stove doesn't require an igniter, like a lighter or match, in order to get started. Read the instruction manual so you know where to pour the pellets and any other details or warnings you need to know. <sep> (A) [substeps] The instruction manual will tell if you have an automatic or manual start pellet stove. Automatic pellet stoves will have a control panel with an on/off button or switch. (B) [substeps] If you are trying to start a pellet stove from scratch, always refer to the instruction manual to help you develop an optimal fuel start. [title] Fill the ring at the bottom of the opening to prevent your stove from falling off. (C) [substeps] To begin working inside the stove, retrieve an empty can about 2 inches (5.1 cm) in diameter. At this length, you will pour the pellets into the hopper, or bucket inside the hopper. (D) You also may want to refer to the stove's instruction manual to find out exactly how much of each pellet you'll need. You may want to write down the instructions inside the manual so you can refer to them throughout the cooking process.
A