Which of the Following Is Considered a Good Piece of Advice

Which of the following is considered a good piece of advice to offer individuals who want to engage in successful negotiations?

A) Don't establish deadlines;when the negotiations are over,they are over.
B) Rushing negotiations can be a good tactic.
C) Don't worry about periods of silence;just wait.
D) Focus on disagreement first and then go back to those areas that are resolved.