Which of the following cases would be heard first in an U.S. District Court?
A. a citizen living in Texas sues his neighbor for property damage due to roaming cattle
B. citizens from Arizona accuse each other of robbery and assault with a deadly weapon
C. a citizen of Mexico residing in Utah accuses a U.S. university of violating her civil rights
D. citizens from Louisiana bring a class-action suit against a company operating in their state
