Use the Following Data to Answer the Question Refer to the Data

Use the following data to answer the question.The letters A,B,and C designate three successively larger plant sizes. $\begin{array}{c}\begin{array}{ccc}\text { Output } & & \text { ATC-A } \\\hline10 & & \$ 6 \\20 & & 5 \\30 & & 4 \\40 & & 5 \\50 & & 7 \\60 & & 10 \\70 & & 14 \\80 & & 19 \\90 & & 25 \\100 & & 32\end{array}\begin{array}{ccc}\text { ATC-B } & & \text { ATC-C } \\\hline\$ 13 & & \$ 44 \\9 & & 35 \\6 & & 27 \\4 & & 20 \\3 & & 14 \\4 & & 11 \\5 & & 8 \\7 & & 6 \\10 & & 5 \\16 & & 7\end{array}\end{array}$ Refer to the data.Economies of scale in plant ATC-A are realized over the ___ to ___ levels of output;diseconomies of scale exist over the ___ to ___ levels of output.

A) 10,30;40,100
B) 10,40;80,100
C) 10,50;60,100
D) 10,70;80,100