(单选题) Which of the following best explains the proverb: when in Rome, do as the Romans do.( )(本题2.0分)
A、 If you go to Rome, you must do things like the Romans.
B、 When you go to a foreign country, you should learn something about their manners.
C、 Romans always do the right thing, so you should follow them.
D、 Manners in Roman are as easy to follow as in other countries.
出自:西南石油大学-机电一体化技术-大学英语