This is all about carefully examining the slope. If you look carefully you will notice B curves in at the top just a little more than A so the first one is correct.
The second one is obviously not true.
The third one is disproved by the first.
The fourth one is correct as C is the peak and has little to no drop or rise.
The 5th one is correct, after spending several minutes examining it with 200%+ zoom I will tell you that it is correct B and D are the same.
I'm not 100% sure but I'm probably 95% sure that The 6th one is incorrect and A is changing height faster than D.
Good luck!
-RxL
