This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to make parsley oil
Boil the water.
Bring a pot of water to the boil and season with salt.
Blanch the parsley.

Pick from:
[A]. Take the pan or saucepan off the stove and put some water on it. Blanching will give you slices of parsley chunky and chewy.;
[B]. Fill a large bowl with boiling water and measure out a cup of parsley and put it into the boiling water. Stir well so the parsley reduces the bitterness of the water.;
[C]. Place the parsley in the sieve and put it into the boiling water for 15-20 seconds. Immediately place it into iced water for a few seconds until the parsley is cold.;
[D]. Place the tops of the vegetables into the water and cover. Boil for 30 minutes, turning halfway through.;
The answer is:
[C].