In the Context of Writing Business Messages, Which of the Following

In the context of writing business messages, which of the following is true?

A) Displaying a can-do attitude reduces the credibility of business messages.
B) Emphasizing what products and services are rather than what they are not contributes toward increasing positivity of business messages.
C) Avoiding diplomatic terms related to your relationships and interactions contribute toward increasing positivity of business messages.
D) The practice of slanting increases the credibility of a business message.
E) Avoiding constructive terms related to your relationships and interactions contribute toward increasing positivity of business messages.