What Was the Political Significance of the Chernobyl Disaster

What was the political significance of the Chernobyl disaster?

A) Those in charge of the plant were executed in what constituted the first mass execution since the Stalinist era.
B) Gorbachev reached out to the United States for help, marking an easing of tensions.
C) The determination that an Afghani terrorist caused the disaster renewed Soviet commitment to the war in Afghanistan.
D) The determination that drunken workers caused the disaster led Gorbachev to begin a campaign against alcoholism.
E) Gorbachev realized there was a need for more radical political change than he had originally planned.