Give me ans A - B - C or D

Martin files a suit against Nichellein a state court over an employment contract. The case proceeds to trial, after which the court renders a verdict. The case is appealed to the state's highest court. After that court's review of Martin v. Nichelle, a party can appeal the decision to the United States Supreme Court if

A. a federal question is involved

B. a state question is unresolved

C. the party is unsatisfied with the result

D. the state trial and appellate court rulings are diffirent.