Silicones are group of organo silicon polymer , select correct statement(s) about them,

a) R₃SiCl produce very complex cross linked polymeric silicones on Hydrolysis .

b) Their water repellency arises because silicone chain is surrounded by organic-side groups.

c) Their strength and inertness are related to the stable silica like skeleton of 

d) Hydrolysis product of ${\mathrm{CH}}_3{\mathrm{SiCl}}_3$ will  block the end of the straight chain produce by hydrolysis of  ${\left({\mathrm{CH}}_3\right)}_2{\mathrm{SiCl}}_2$

• A

  a,d

• B

  a,b,c

• C

  b,c

• D

  a,b,c,d