Gl Assessment 11+ NVR Pack 2 Section 3

[ak2003]

I'm hoping someone might be able to help with one of the questions on the above paper. My DS can't figure out the reasoning behind question 4. Both myself and DH cannot get it either! Any help would be greatly appreciated. The answer booklet states B is the correct answer.

Mirror it then turn 90 degrees. I think.

It is pretty small image on my screen, but looks like just 90 degrees counter clockwise. Sorry if I've missed details. J

Thanks EvilTwins, it's always so obvious when someone points it out ;-)