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Subject :NSO    Class : Class 8

Study the given flow chart and identify P, Q and R.

A Livestock wastes Styrofoam cup DDT
B Garbage BHC Aluminium cans
C Sewage sludge DDT Styrofoam cup
D Livestock wastes BHC Grocery

Styrofoam cup is not recyclable...then how come is the correct answer is A.It should be c

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