Marta was born in South Korea to her parents Paul and Julie. Both Paul and Julie were born and raised in the United States, but needed to temporarily move to South Korea for business reasons. Based on the scenario above, which of the following statements is true?
a. Marta is NOT a United States Citizen
b. Marta IS a United States citizen because of the law of soil
c. Marta was naturalized as a United States Citizen
d. Marta IS a United States Citizen based on the law of blood