Juristiction of arriving a/c

[Quintilian]

jurisdiction of arriving a/c

Hi!
I'm studying for becoming an ATCO, and just had my first Mastery test on Entry Point North (Nordic ATS Academy). I found one of the questions quite strange, and It would be nice if someone could throw in some input...
Question was a multiple choice, and approx. the following:
"When does the controller not longer have jurisdiction over an arriving a/c?"
a - When the A/C leaves the maneouvring area
b - When the A/C gets "cleared to land"
c - something else
d- something else...
I answered B, but afterwards a teacher told me that she thought the correct answer was A.
I was a bit puzzled concerning the framing of the question. Isn't it true that the controller actually never gets JURISTICION over an aircraft?
I do know that the a/c is not longer the controllers RESPONSIBILITY when it has entered the apron (left maneouvring area). In my mind those things aren't synonymous..... I can also remember to have heard somehting about the pilot being "responsible" after getting the "cleared to land".
Any thoughts?
Cheers
TH