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. I always cook food in olive oil.

• Olive oil is always used by me to cook food.
• Food is always cooked by me in olive oil.
• Food is always cooked by myself in oil which is of olive.
• Cooking of the food is always done by me using olive oil.