What Was Japan's Strategy to Deal with Terrorism in the 70's

What was Japan's strategy to deal with terrorism in the 70's?

A) They had a policy of "shoot first and ask questions later," something that most people saw as very unforgiving.
B) Japan made great advancements in studying terrorism and were therefore able to demilitarize terrorists peacefully without making meaningful concessions.
C) They negotiated with terrorists, something that did not sit well with the United States who had a "no concessions" terrorist policy.
D) Japan had no strategy and was ravaged by awful terrorists.