This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to treat a dog with a cold
Keep your dog warm and dry.
Keep your dog in a warm, dry environment as soon as you notice any potential symptoms. Turn up the thermostat by 2 or 3 degrees and provide plenty of warm blankets for your dog to curl up in.

Choose from: (a). You might consider placing an old sheet over your dog's bed to keep it warm and comfortable. If you have a particularly cold dog, start by heating up the crate in front of the dog. (b). You can even use dog sweaters and socks to help your furry friend stay cozy while they fight their symptoms. Pet stores and online retailers offer heated dog beds, which use a low heat to help keep your dog consistently warm. (c). It's advisable to take your dog to the emergency veterinarian. Bring a damp towel to keep your dog warm. (d). Never leave your dog alone in a place where it won't be able to move around or be comfortably exposed to cold air. Also, make sure you provide extra warm blankets and towels to keep your dog warm when it needs them.
The answer is:
(b).