A Friend Asks You to Donate an Hour of Your

A friend asks you to donate an hour of your time to help out at a local soup kitchen. After agreeing to and fulfilling this request, she then asks you if you would be willing to spend one day a month volunteering at this soup kitchen. Your friend is using what type of compliance technique to persuade you to spend more time at the soup kitchen?

A) Door-in-the-face technique
B) Foot-in-the-door technique
C) Lowball technique
D) That's-not-all technique