Assertion (A): Silicons are water-repelling in nature. Reason (R): Silicons are organosilicon polymers, which have (–R2SiO–) as repeating unit. (i) A and R both are correct and R is the correct explanation of A. (ii) Both A and R are correct but R is not the correct explanation of A. (iii) A and R both are not true. (iv) A is not true but R is true.