All of the Following Happened as a Result of the Discovery

All of the following happened as a result of the discovery of gold in California,except

A) About 80,000 fortune seekers arrived in California in 1849 alone.
B) Half of the migrants to California came from across the globe.
C) Many of the "forty-niners" ended up staying in California even if their searches for gold did not come to fruition.
D) As new settlers, migrants to California formed diplomatic relationships with Native Americans.
E) Most of the booming settlements of the gold rush days later decayed into ghost towns.