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".
Q: [header] How to clean swiss chard [title] Rinse greens in a large bowl. [step] Fill a large bowl of water with cool water. Carefully wash off each leaf, removing all dirt and grit. <sep> (A) Then, wash the leaves with either a soapy head or a kitchen cloth. [substeps] If you prefer to use a colander, repeat the process until all the leaves are washed and dry. (B) [substeps] If you've washed your swiss chard in a bowl of water, you should wash it yourself. Put the chard into the water, wetting the leaves down with a cloth to soak them. (C) Add a teaspoon (12 g) of white vinegar to the water. Add some lavender oil (a good spritz or two is needed to achieve this) and some water to help remove the water from the chard. (D) Make sure to get into the nooks of the leaves and the stem. [substeps] Try not to be too rough with the leaves so you don't tear or bruise them.
A:
D