Which of the following is coated as a thin layer on the inner side of non-stick pans?

Which of the following is coated as a thinlayer on the inner side of non stick pans?

Which of the following is coated as a thinlayer on the inner side of non stick pans?

Which of the following polymers is used for coating as a thin layer on the inner side of non - sticking pans ?

Which of the following is used to make non-stick