Is that british currency
or is ut a diffrent country
The function is B, you can tell using the vertical line test through each point
#1: I believe the first one (A)
#2: I believe the first one (K)
#3: I believe the second one (M)
#4: I believe the second one (nR)
#5: I believe the fourth one (Vp)
I'm not quite they're right but if no one answers, I might be your best option.