Joe Has Received an Email from a Supplier Regarding the Delay

Multiple Choice

Joe has received an email from a supplier regarding the delay of his order. In order to maintain goodwill with the supplier, while writing his reply, Joe must:

A) adopt a passive voice.
B) be frank and clearly express his anger.
C) focus on the supplier and not the facts leading to the failure.
D) use the word 'you' as much as possible to make the supplier understand the situation better.
E) use more negative words than positive words.