Assertion (A): [SiF₆]^2– is known whereas [SiCl₆]^2– is not.
Reason (R): Cl atom causes higher steric hindrance.
1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true and R is not the correct explanation of A.
3. A is true but R is false
4. A is false but R is true

The incorrect statement among the following about silicone is-

1. It has  (R₂SiO) as a repeating unit

2. They are hydrophophilic(water loving) in nature.

3. They have  high thermal stability, and high dielectric strength

4. They are used in surgical and cosmetic plant