Which of the Following Is an Example of the Impression

Which of the following is an example of the impression management (IM) technique of "exemplification"?

A) A manager tells his boss, "You're absolutely right on your reorganization plan for the western regional office. I couldn't agree with you more."
B) A salesperson says to a prospective client, "I've got two tickets to the theater tonight that I can't use. Take them. Consider it a thank-you for taking the time to talk with me."
C) An employee says to his boss, "I'm sorry I made a mistake on the report. Please forgive me."
D) A salesperson tells his boss, "Matt worked unsuccessfully for three years to try to get that account. I sewed it up in six weeks. I'm the best closer this company has."
E) An employee sends e-mails from his work computer when he works late so that his supervisor will know how long he's been working.