In the following question, a word is given in bold. It is then followed by three sentences in which the highlighted word has been used. Find out the sentence/s in which the highlighted word has been CORRECTLY used and mark that as your answer.  FOIL  
I. The central bank introduced new monetary guidelines to foil any attempts by illegitimate entities to manipulate liquidity in foreign exchange markets. 
II. Environmental scientists cautioned that if industrial emissions continue at this rate, they could foil delicate coastal ecosystems across the southern region. 
III. Had the security personnel not noticed the suspicious digital activity quickly, the cybercriminals would have succeeded in their attempt to foil sensitive data.