Remaining Time: 2 hours, 39 minutes, 46 seconds Question Completion Status Question 4 of 30 Moving to another question will save this response. 1 points Save Answer Question4 A machine has an average time until failure of 10 years. Its time until failure is exponentially distributed. How likely is it to break down before 5 years? O a. 0.607 )b.0.993 c. 0.393 Moving to another question win save this response. Question 4 of 30