How Did Western Leaders Respond to Japanese Aggression in China

How did Western leaders respond to Japanese aggression in China in 1931-1937?

A) The League of Nations condemned Japan's actions but imposed no sanctions, while the United States drastically cut the flow of raw materials to Japanese industry.
B) Western leaders universally condemned it, and the League of Nations imposed harsh sanctions and fines on Japan and threatened military intervention in the event of further incursions.
C) Western leaders gave their tacit support, as Japan was seen as a more "civilized" society, and its invasion of China could potentially open the country to Western investment.
D) Western leaders did nothing, as both Japan and China were seen as far-off countries that held little interest for Europe or the United States and posed no major threat.