Which statement best identifies how the decision in the United States v Eichmann case was a result of constitutional interpretation?

a. The Supreme Court used the Flag Protection Act to make a decision
b. The Supreme Court followed the Constitution exactly and no interpretations were made in this case
c. The Supreme Court reconsidered the language of the Fourteenth Amendment
d. Flag burning is not explicitly stated under the First Amendment but was interpreted to be a form of expression

d. Flag burning is not explicitly stated under the First Amendment but was interpreted to be a form of expression