Definition: 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 take and print photos that look like photo booth pictures [title] Get your device and open the camera app. [step] Set it to the front-facing camera (the webcam). [substeps] If you have a regular camera and a tripod, then use the regular camera. <sep> (A) You only need to press and hold the shutter button for at least 30 seconds (or click and release the button) to take a picture. If not, get the assistant to either bring up pictures for you or point them out to you. (B) [title] Use the screen to control where you are zooming. [step] Zoom to one part of the screen at a time. (C) Put it on the tripod and set it so it takes the photo after 5 seconds. The photos will be more stable and you'll have extra time to get ready. (D) With a tripod, the photo booth camera (which can be set to whatever style you prefer) has two slots, one just for backing up parts. Though you can use flash to greatly increase the zoom capabilities, you won't be able to zoom at optimum magnification.
Output:
C