Task: Question Answering
Input (English): Question: In 1990 a total of p earthquakes occurred worldwide, some but not all of which occurred in Asia. If r of these earthquakes occurred in Asia, which of the following represents the ratio of the number of earthquakes that occurred in Asia to the number that did NOT occur in Asia?

 Option A: p/r

 Option B: r/p

 Option C: r/(p-r

 Option D: p/(p-r

 Option E: 1- (r/p
Output (English): Option C