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: While it is good to see SEBI taking a serious view of leaks and initiating suo motu action, bringing the perpetrators to book through such old-fashioned methods may be an uphill task.

Q: But recent episodes of suspected insider trading through WhatsApp groups, in which analysts shared prescient tip-offs about upcoming results for top listed companies, reveals that the framework remains porous.

R: The Ministry of Corporate Affairs and the Securities Exchange Board of India (SEBI) have lately redoubled their efforts to put in place a water-tight governance framework for listed firms.

S: Initiating a probe into this episode, SEBI has interrogated analysts, conducted raids on stock brokers and deployed search-and-seizure powers to confiscate laptops and mobile phones.