How was the contamination from the Minamata Bay mitigated?
a. The bay was dredged, removing the contaminated sediment, and a new port was built
b. It was not mitigated, the bay is still contaminated
c. The plant was shut down and when the contamination was no longer being replenished, it naturally dissipated
d. Storms flooded the bay and the contamination was washed out to sea