In the question given below, a set of four sentences P, Q, R & S is given, which when properly sequenced, form a coherent paragraph. Arrange the sentences in the correct order and mark the correct order as your answer. P. Joining a union has always been presented as part of the right of free association. Q. That is, workers argue that they have a right to unionise; employers argue that they do not. R. Employers also try to starve unions of the funds that they need to operate. S. But even when employers recognise the right of employees to unionise, they tirelessly place obstacles in front of those who would like to do so.