Japan Had Several Countermeasures Against Tsunami in Place Prior to the 9.0

Japan had several countermeasures against tsunami in place prior to the 9.0 magnitude Tohoku earthquake of 2011.Why then was the death toll so high?

A) The earthquake destroyed the breakwater seawalls leaving the coastline vulnerable.
B) The earthquake triggered landslides destroying natural and manmade high ground so there was no place to take refuge.
C) The tsunami run-up was underestimated in many locations therefore the countermeasures were under designed and fell short of mitigating the hazard.
D) Faulty equipment design resulted in no tsunami warning being issued.