Charlotte needs to raise money for a charity benefit she is attending. at lunch, she asks her friend, samantha, to attend the benefit to keep her company and samantha gladly accepts. by the end of lunch, charlotte has told samantha all about the purpose of the benefit and asks if she'd be willing to make a $100 donation to support the cause. what technique did charlotte use? a. door-in-the-face b. adaptive c. selling d. ingratiation e. need satisfaction f. foot-in-the-door