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 make watermelon jello shots [title] Using a juicer, juice the limes. [step] Let the juice drop through a sieve into a bowl so that you can catch the seeds easily. [title] Reserve the juice for another use. <sep> (A) [title] Place the watermelon flesh in the freezer. [step] Letting the watermelon rest for 24 hours will stiffen the watermelon flesh further. (B) [title] Turn the lime rinds inside out. [title] Find the membrane that connects the pith to the rind and pull on it to separate the pith from the rest of the lime, using a paring knife if needed. (C) [step] Place it in a glass or container and chill to preserve its flavors and texture for about 4 days. [substeps] Use freshly cut watermelon and fresh juices so that you don't have to strain them. (D) [step] For example, place 1 cup of ice cream into a glass and put the lemon zest into the blender. Add 1 tablespoon of nutella , 1 tablespoon of lime juice and the lime zest to the blender for further control.
Output:
B