In the following question, a sentence has been given in Active/Passive voice. Out of the four alternatives suggested, select the one which best expresses the same sentence in Passive/Active voice.
Chefs use these machines to mix the ingredients.

Options

A. These machines are used by chefs to mix the ingredients.
B. Using of these machines is done by chefs to mix the ingredients.
C. Chefs mix the ingredients using these machines.
D. These machines had been used to mix the ingredients by chefs.

Answer

A, B, C, D