CAT 2015 Verbal and Reading Comprehension

The passage given below is followed by four alternative summaries. Choose the option that best captures the essence of the passage Key in the number of the option you choose as your answer.
Volkswagen, trying to get to the bottom of its emissions-cheating scandal, pressured employees to tell what they know, announcing an amnesty program for informants that will expire soon. The company has yet to explain publicly who was responsible for installing software in 11 million diesel vehicles that was designed to disguise the output of nitrogen oxide, a pollutant harmful to the lungs. Volkswagen also admitted that it underreported the levels of carbon dioxide produced by about 800,000 of its diesel and gasoline vehicles in Europe and that had it exaggerated their fuel economy