Refer to the given dichotomous key.
I. (A) Fibre obtained from natural resources - Go to II
(B) Fibre obtained from chemicals - 
II. (A) Plant fibre - Go to III
(B) Animal fibre - Go to IV
III. (A) Fibre obtained from seeds of plants - 
(B) Fibre obtained from stem of plants - 
IV. (A) Fibre obtained from mammal - 
(B) Fibre obtained from insect - 
Which of the following is incorrect regarding P, Q, R, S and T?
AP is a petroleum based fibre which does not absorb water readily.
BBoth fibres Q and S are obtained from their source organisms without harming them.
CQ is separated from seeds by retting whereas R is separated from stems by ginning.
DS can be obtained from the same animal again and again whereas T can be obtained from an animal only once in its lifetime.
Solution is one type and option is one type