In each of the following questions, one phrase has been given and it has been followed by four sentences. You have to find out in which of these sentences the phrase has been used properly according to its meaning and mark your answer from the options. Mark your answer 'all correct' if you find that phrase has been applied properly in all the sentences.

blow the lid off

I. Her latest novel blows the lid off the international art world.

II. That company's stock price plummeted after the media blew the lid off the CEO's embezzlement scandal.

III. The police inspector blew the lid off the work of the gang of thugs. The investigation blew the lid off the scandal.

IV. The newspaper's investigation blew the lid off the governor's awarding state contracts to his friends .