45. What is the biggest difference between Brazilians and South Koreans in social situations?(A) Brazilians usually offer long handshakes to each other, while South Koreans hardly shake hands.(B) Brazilians make eye contact to close friends only, while South Koreans generally shun their eyes away.(C) Brazilians wait for someone to introduce them, while South Koreans introduce themselves.(D) Brazilians often touch each other during talks, while South Koreans usually avoid physical contact.