The question below consists of a set of labelled sentences. These sentences, when properly sequenced form a coherent paragraph. Select the most logical order of sentences from among the options. P: Child labour in India is the practice where children are engaged in economic activity on part time or full time basis. Q: The practice deprives children of their childhood and is harmful to their physical and mental development. R: Poverty, lack of good schools and growth of informal economy are considered as the most important causes of child labour in India. S: The 2001 national census of India estimated the total number of child labour, aged 5-14, to be at 12.6 million.