Question

Each line represents a different rate (cost per item). Which line represents the lowest rate ?

Line A
Line B
Line C
Line D

Answer 1

I think it's line A

Explanation:

line A sells 15 items, but the cost of each item doesn’t go up as it shows on the graph.

Answer 2

Line A
Explanation:
line a sells 15 items but the cost of each item doesn’t rise