Instructions: 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".
Input: [header] How to estimate your uber fare [title] Tap the uber app. [step] Log in if you aren't logged in automatically. [title] Tap " where to? " [title] Enter your destination. <sep> (A) [title] Tap the " current location " button. [title] Drag the pin to your desired pickup location. (B) [step] Use the app's official search field to search for a fare. It doesn't matter what your destination is--there are four transit options: taxi, express, money, and subway. (C) [step] Before you can estimate your fare, you'll need to know exactly where you're going ,. Tap on the " save now " button to save your information. (D) [step] Tapping the " where to is " field will display a list of near-and-distant destinations. You can also browse by subdestinations from your driver preferences.
Output:
A