Which of the Following Is Typical of Customers' Behavior at Hong

Which of the following is typical of customers' behavior at Hong Kong's McDonald's?

A) The staff is friendly and everyone-including the customers-smiles a lot.
B) Customers clear off their tables and are eager to keep the restaurant tidy and clean.
C) Customers tend not to use napkins (though they are widely available) because they believe that paper products are too valuable to use so wastefully.
D) Customers are voluntarily sex-segregated, with males on one side of the restaurant and females on the other.