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".

Example Input: [header] How to determine who has right of way [title] Come to a complete halt at a stop sign or red light. [step] At a stop sign, come to complete halt for about 2 seconds or until vehicles that arrived before you clear the intersection. If you're stopped at a red light, proceed when the light has turned green. <sep> (A) This will give you enough time to catch the light and clear the intersection. [substeps] Vehicles behind or behind you may not brake. (B) This blocks oncoming cars from passing you. [substeps] If in doubt, you can also tell if you're going too fast by looking ahead at the tires of that car. (C) If you are stopped before a red light signals for another vehicle, you're on your own. [substeps] This means every car crossed before you has passed, and every vehicle in the intersection has stopped before you. (D) If the intersection has a white stripe in your lane, stop before this line. [substeps] If you have a stop sign, but the street you're crossing does not have a stop sign, wait until all traffic has cleared before crossing the intersection.
Example Output: D

Example Input: A woman introduces that she will make a salad. She starts by taking a hand mixer and mixing several ingredients together to form a dressing. then <sep> (A) she adds hot chocolate syrup and water to the mixture. (B) , she adds the additional ingredients together with some cous cous and mixes everything together. (C) , she squeezes into a pot and put some chopped parsley and garlic in it. (D) she adds other ingredients, mixing the salad, followed by slicing the chocolate into slices.
Example Output: B

Example Input: [header] How to install sliding barn doors [title] Measure and cut two lengths of mounting board for each barn door. [substeps] The boards should be as long as the doors and about 1 inch (or 4 cm) wider than the track. [title] Attach the mounting boards to the top and bottom of the doorway using drywall anchors and ensure that the mounting boards run straight along the doorway. <sep> (A) [title] Mount the 3 mounting boards to the door frame in a set row. [substeps] Lift and push, holding the door frame for support and lifting. (B) [title] Measure and cut two lengths of track for each barn door. [title] Use joint brackets to attach sections of track as needed. (C) [title] Mark where you want to mount your sliding barn door using mounting hardware. [substeps] Measure the door of the barn and mark a spot along the plywood where the track stops. (D) [title] Patch any cracks and gaps in the doorway with drywall compound. [substeps] Drywall compounds of course must be obtained and repaired at a hardware store.
Example Output:
B