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

c-californios were able to establish legal ownership of their property in u. s. courts without the original land grant documents.

d-nearly two-thirds of the native american population of california died during the gold rush.