Refer to the given flow chart and select the incorrect option regarding P, Q, R and S.

• A. P is a protein fibre whereas Q, R and S are cellulosic fibres.
• B. Retting is involved in processing of Q whereas ginning is involved in processing of S.
• C.  Rayon
• D. Fabrics made from P and S are excellent winter clothing's whereas fabrics made from Q and R form excellent summer clothing's.