Chief Among the Reasons for Japanese Expansion in the 1930s

Chief among the reasons for Japanese expansion in the 1930s were

A) an expanding population and severe lack of natural resources on the island nation.
B) intense hatreds for the Chinese and Chinese culture.
C) desires by ruling military leaders to test their newly developed and newly organized armed forces.
D) beliefs among the Japanese that they were a "master race" destined to rule all of Asia.
E) fear of Chinese imperial aggression unless the Japanese struck first.