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". 

A lady holds a toothbrush as a child sits on a counter. the lady <sep> (A) scrubs the child's teeth. (B) brushes the boys teeth. (C) easily cleans the teeth of the child while kissing him. (D) moves cake cakes a to see if the child likes them.
B

A lot of people are gathered in a pier next to a lake with a lot of people kayaking. man <sep> (A) is in sal driving the boat to the lake and kayaking. (B) is being interviewed by a reporter. (C) is sitting on bench talking while people sits on water kayaking and their stares are bent over. (D) is standing in the lake and playing darts and playing with others.
B

[header] How to diagnose urinary tract disease in senior dogs [title] Notice if your dog has trouble urinating. [step] One of the most common symptoms of urinary tract disease is an inability to urinate. Signs of urinary tract disease also include straining to urinate, urinating frequently or only urinating in small amounts, as well as crying when urinating. <sep> (A) If you are worried that your dog is under-urinating, go to a veterinarian or a household health clinic to make an appointment. [title] Look out for your dog over six months old. (B) This change commonly develops as your dog ages. [title] Notice any difficulty taking urinary drug or using prescription medications. (C) [substeps] If your dog does urinate, check their urinate for any blood. You should also note if their urine appears cloudy, as this could be a sign of an infection. (D) [title] Get a prescription for prescription antidiarrheal medications. [step] If you find that your senior dog urinates heavily and unregularly, talk to your vet about giving your dog antidiarrheal medications.

C