Kim a sophomore in high school wants to go to a weekend homecoming party at another student's house. Her parents are not too keen on Kim attending parties, so Kim first asks them if she can go to a concert out of state with her friends. When they say no, she then asks them if she can attend the party. Kim's parents agree. What strategy did Kim use to get her parents to agree to let her go to the party?

A) low balling

B) that's not all

C) norm of reciprocity

D) door-in-the-face technique

E) foot-in-the-door technique