Which of the following are true about wool ?(i) Hair of animals like goat, sheep, camel etc, are used to obtain woolen fibre (ii) Fabrics like shawls and sweaters are obtained from wool (iii) wool is a poor conductor of heat and it protects us from cold (iv) Woolen cloth helps douse fire.

Options

A. i,iii and iv only
B. ii,iii and iv only
C. i and iii only
D. all of those