Which of the Following Is Useful Advice on Conducting Business

Which of the following is useful advice on conducting business across cultures with those who have limited English ability?

A) Determine a person's level of communication proficiency within the first few moments of your interactions with them.
B) Speak at your normal,regular pace instead of speaking slowly as this may be viewed as disrespectful.
C) Use slang and jargon instead of literal language as much as possible.
D) Allow those with limited English ability enough time to process their thoughts into English.
E) When using an interpreter,focus on the interpreter instead of the person you are communicating with.