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 being a class-action suit against a company operating their state.