As the efficiency of the catalytic converter drops through the deterioration, the switching rate of the rear O2 sensor signal will start to look like the front O2 sensor signal. When the rear O2 sensor signal reaches approximately 75% of the front O2 sensor, which of the following is the result?

A. The diagnostic trouble code is stored with the MIL on.
B. A one trip flag is set with the code stored, but the MIL isn't activated.
C. The catalytic converter should be replaced.
D. The catalyst beads in the converter should be changed.

If you have no clue, please don't answer.

like many students at university, you may be unhappy about the results you attain in exams. you may feel that even with all you are doing there must be something more -- or different-- you could be doing to get better grades. we have all at some time or other heard of that student who only studies a couple of hours for final exams and scores a's every time. we stand in awe of those who seem to breeze through without undue effort and seem to need very little in the way of studying to nail an exam. the reasons for success, in what i think are the vast majority of cases, are less esoteric than many students think: successful students consistently apply a series of productive strategies with view to attaining clearly identified learning and grade goals throughout the academic term.