Which of the following would be most appropriate for its consumer product line?

If a firm increases its activity level,

a. costs should remain the same. b. most costs will rise. c. no costs will remain the same. d. some costs will change, others will remain the same.

In the direct approach to writing a routine request, state the main idea

A) when you're closing the message. B) in the middle of the second paragraph. C) when you open the message. D) at the bottom of the first paragraph. E) only by implication; do not specifically state why you are writing.