Which statement about the effects of the gold rush are correct?

A.The old ruling families of the Californios had a strong say in the constitutional convention of California.

B.Californios were able to establish legal ownership of their property in U.S. courts without the original land grant documents.

C. Nearly two-thirds of the Native American population of California died during the gold rush.

D. Chinese laborers were welcomed and given higher-paying jobs in the mines because of their strong work ethic.