Because culture seems to be logical and consistent when viewed from within a particular culture,it is said to be

A) learned.
B) unchangeable.
C) coherent.
D) complete.
E) dull.

The long-run average total cost of producing 100 units of output is $4,while the long-run average cost of producing 110 units of output is $4.These numbers suggest that between 100 and 110 units of output,the firm producing this output has:

A) economies of scale.
B) diseconomies of scale.
C) constant returns to scale.
D) diminishing returns.