Correct statements among (I) to (IV) regarding silicons are :
I. They are polymers with hydrophobic character.
II. They are biocompatible.
III. In general, they have high thermal stability and how dielectric strength.
IV. Usually, they are resistant to oxidation and used as greases.
- I and II only
- I, II, III only
- I, II, III and IV
- I, II and IV only