Korean-American youths who travel to South Korea to participate in cultural immersion programs observe that "they never feel so American as when they are slurping noodles in Korea. Even their slurps have American accents." This example suggests that:

A. our genes endow us with our cultural characteristics.
B. people learn the ways of the culture into which they are born and raised.
C. humans are born with cultural characteristics.
D. there is connection between physical appearance and culture.