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

How to make aloo keema (a pakistani dish )
In a pressure cooker, put about 1/2 cup of cooking oil and turn the heat on.
Peel the garlic and chop it into little pieces.
Then, put it in the pressure cooker.

a). Stir with intervals while doing these steps : Peel the onion and chop it into pieces, " not " very small pieces; each little piece should be about 1 centimeter (0.4 in). Peel the tomatoes and chop them in half.;
b). Put it in the colander for 5 minutes to steam. Strain the saute as you stir.;
c). Also wash your hands with a little bit of extra water, to sterilize them. In a small bowl, put 3 oz.;
d). Add the butter and whisk it together with the powdered milk. Put in the salt, four tbsp of fresh pecorino de leche or ghee and 1 tbsp of flaxseed oil and mix well.;
The answer is:
a).