Which line on the graph represents the information in the table?

Cost of Pencils
Number of Pencils
Total Cost (in $)
2
0.50
4
1.00
6
1.50
8
2.00

On a coordinate plane, the x-axis is labeled Number of pencils and the y-axis is labeled total cost in dollars. Line a goes through points (1, 4) and (2, 8). Line b goes through points (1, 2) and (2, 4). Line c goes through (2, 1) and (4, 2). Line d goes through (4, 1) and (8, 2).
line a
line b
line c
line d