Sarah, Who Is from the United States, Is Using Sign

Sarah, who is from the United States, is using sign language to communicate with Kira, who is from Japan. Which of the following scenarios is most likely?

A) They will have no problem communicating because sign language is a universal language.
B) They will not be able to communicate, because sign language is not used in Japan.
C) They will likely be able to communicate because most countries use American Sign Language (ASL) .
D) They may have difficulty communicating because there are structural differences in sign language across cultures.