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In this task, you're given an article, a question which often contains a blank and four options (associated with "A", "B", "C", "D"). Your task is to find the correct answer (from the given options) for the question from the given article and return one of the options from "A", "B", "C", and "D". Do not generate anything else apart from one of the following characters: "A", "B", "C", "D". There is only one correct answer for each question.

Article: Here is some must-know information from a handbook on how people behave in doing business in some countries. In Brazil Brazilians are warm and friendly.They often stand close when talking and it is common for them to touch the person on the shoulder.People often greet each other (particularly women)with light cheek kisses . Schedules tend to be flexible,with business meetings sometimes starting later than planned.But to be safe,be on time.Meals can stretch for hours--there's no such thing as rushing a meal in Brazil.Lunches also can start in the mid to late afternoon.Brazilians are social,preferring face-to-face communication over emails or phone calls. In Singapore Singaporeans shake hands when they meet and often also greet each other with a small,polite bow.Business cards should be offered and received with two hands.Arriving late is considered disrespectful.So be on time.Efficiency is the goal,so meetings and dealings often are fast-paced.Singaporeans are direct in their discussions,even when the subject is about money.Rank is important and authority is respected.This determines how people interact in meetings.For example,people avoid disagreeing outright with someone of a higher rank. In the United Arab Emirates In the UAE,status is important,so the most senior or oldest should be greeted first with their titles.The handshake seems to be longer than elsewhere.So do not pull away from the handshake.Women should cover themselves when it comes to dress.Men also tend to be covered from neck to elbows and down to the knees.People do not avoid entertaining in their homes, but they also hold business meals at restaurants.Touching or passing food or eating with your left hand is to be avoided.When meetings are one-to-one, if your host offers you coffee,you should refuse.It might seem odd,but it is a cultural tradition.Coffee should only be accepted if it is already set out or presented. In Switzerland The Swiss tend to be formal and address each other by last name.They also are respectful of private lives.You should be careful not to ask about personal topics.Punctuality is vital,something that comes from a deep respect for others' time.Arrive at any meeting or event a few minutes early to be safe.They also have clear structure in their companies.Higher-ups make the final decisions,even if others might disagree.Neat,clean dress is expected.The Swiss follow formal table manners.They also keep their hands visible at the table and their elbows off the table.It is polite to finish the food on your plate.
Question: The passage is mainly about _ .
Options: (A) communication types (B) the workplace atmosphere (C) customs and social manners (D) 1iving conditions and standards
Output:
C