You will be given a definition of a task first, then some input of the task.
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 blanch spinach [title] Bring a large pot of water to a boil over high heat. [step] If desired, add just enough salt to give the water a slightly salty taste. [title] Wash your spinach leaves, and pat them dry. <sep> (A) [step] If you'd like to blanch or caramelize the leaves, then place the leaves and blanch them in the boiling water for 10 minutes. [substeps] Cabbage leaves are green and individual, and making colorful bruises and punctures with green leaves will increase the overall health benefits of the blanching process. (B) [step] Place them in a colander to set aside. You can blanch spinach only when you get it to the size you desire, or freeze it if you want to preserve it. (C) [title] Put ice cubes and water in a large bowl. [step] Fill the bowl 3/4 of the way full with ice, and add cold water to reach the top of the ice. (D) [step] Cut them in half lengthwise to make one small square. [title] Place the spinach leaves in the boiling water.
Output:
C