Trick question on BTEC course?

[Xplo]

Hey all was doing my btec course jsut now and came accross this. I can kinda see why the answer is correct but its a bit of a funny one!

http://img426.imageshack.us/img426/9978/sddshhsdhsdhsd6qk.jpg

 

[Xplo]

Thats what i mean, im ment to get a qualification from this!