Mashaal Masha
The graph shows the possible combinations of the number of pounds of tangerines and lemons that could be purchased for $\$18$ at a certain store. If Melvin purchased lemons and 4 pounds of tangerines for a total of $\$18$, how many pounds of lemons did he purchase? 

 

Difficulty: Easy
A: 

7

B: 

10

C: 

14

D: 

14

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