The question is like this in Aviation Exam (slightly different worded in atpl questions but the same comment about it being wrong in the CAA because wrong answer is marked as good):
Consider maximum range speed and speed for maximum angle of climb. How will headwind affect those speeds (everything else remain the same).
A. Maximum range speed increases and speed for maximum angle of climb remains the same (correct according to theory, both question banks and student comments)
B. Maximum range speed remain the same and speed for maximum angle of climb remain the same (expected by the CAA at least until 2018 according to the question banks)
and 2x more answers like
C. Maximum range speed increases and speed for maximum angle of climb increase
D. Maximum range speed decreases and speed for maximum angle of climb remains the same.
PS. Something happened to my profile (some kind of bug probably) so I have to wait before what I post is published and can get only one PM.....