This Is Based on a Real Scenario at a Japanese

This is based on a real scenario at a Japanese investment bank. You have discovered a major complex case of international fraud at the company in the course of executing a project. You have reported it to your manager and were not satisfied by his lack of response. What should your NEXT action be?

A) Call your lawyer, even though he's kind of a jerk.
B) Tell your boss' boss. If he doesn't listen, tell your boss' boss' boss.
C) By telling your boss, you did your duty.
D) Resign from your position.
E) Report it to the authorities.