High Conviction Rates

According to Travellers' Tales

If you were falsely accused of a crime, would you prefer the trial be held in:
A. China
B. South Korea, or
C. Japan
Give up? The correct answer is D. None of the above.
That's because in all three countries, the conviction rate is 99%.

But there are no citations. In Why Is the Japanese Conviction Rate So High? J Mark Ramseyer and Eric Rasmusen say "...the high conviction rates reflect case selection and low prosecutorial budgets; understaffed prosecutors present judges with only the most obviously guilty defendants."