SPI and CPI

I had a below question in Oliver

 

Post-mortem analysis after scheduled finish date of a project shows a CPI of 0.8 and an SPI of 1.25. What is a plausible explanation for that?92

o The project was terminated early. At that time, it was over budget and ahead of schedule.

o The project has produced additional deliverables which were originally not required.

o The project has evidently been finished under budget and behind of schedule.

o The project has evidently been finished over budget and ahead of schedule

 

I had Selected the last option and got it wrong. The Correct answer is Option 1 ( Which is The project was terminated early. At that time, it was over budget and ahead of schedule)n

 

Can some one guide me the reason for choosing one to improve any gaps in my understanding

 

 

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