Based on the table, in every two additional tangerines, there is an additional 80 calories added to it as well.
Hence, at 10 tangerines, there will be 320 + 80 = 400 calories.
Based on the choices:
a. 10 x 20 = 200
b. 10 x 40 = 400
c. 80 + 320 = 400
d. 160 + 240 = 400.
Therefore, it is Option A that does not show a way to find the number of calories in 10 tangerines.
