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 diagnose an overactive bladder [title] Pay attention to incontinence. [step] If you feel like you need to rush to the restroom and have a sudden urge to urinate, you're experiencing " urgency incontinence. " it may feel like you can't control your bladder. <sep> (A) This is a classic symptom of overactive bladder. [substeps] Urgency incontinence is different from stress incontinence. (B) Although it may seem sudden, it is often worse than anything you are feeling. Even small incontinence can be a sign of an overactive bladder. (C) You may also feel like you need to use the bathroom to get something, such as water. Pay attention to whether your feelings worsen when you feel like you need to pee, or if you feel whatever you are experiencing at least regularly. (D) You may feel all over-full or hard. [title] Be aware that bladder incontinence can happen suddenly and quickly.
A