Spiders make their webs of silk. Which of the following are the characteristics of
these webs?
(i) It is five times stronger than steel
(ii) It is water proof
(iii) It is stretchable
(iv) It attracts insects.
(A) (i) & (ii)
(B) (ii) & (iii)
(C) (i), (ii) & (iii)
(D) (i), (ii), (iii) & (iv)