Use the following data to answer the next question.OutputATC-AATC-BATC-C10$6$13$442059353046274054205073146010411701458801976902510510032167The letters A, B, and C designate three successively larger plant sizes. In the long run, the firm should use plant size “A” for the production of

A. all possible levels of output.
B. all levels of output greater than or equal to 40.
C. 10 to 30 units of output.
D. 30 to 60 units of output.