How did the U.S. respond to the Nanjing Massacre?

ABy declaring war with Japanincorrect answer
BWith support for new lawsincorrect answer
CBy invading mainland Chinaincorrect answer
DBy cutting off trade with Japanincorrect answer
10 of

the answer DBy condemning the massacre and imposing economic sanctions and an embargo on Japan. The U.S. also supported the effort to bring the perpetrators of the massacre to justice through the International Military Tribunal for the Far East.