In responding to a routine request for information from someone else, which of the following is true?

Question $6$Select one:

a$.$

The writer does not need to bother with a courteous close.

b$.$

The writer should not worry about organization; the reader will be motivated to read it anyway.

c$.$

The writer should refer to the original request for information in his or her own letter.

d$.$

All of the above are true.