Which of the Following Correctly Describes a Production Isoquant

Multiple Choice

Which of the following correctly describes a production isoquant?

A) An isoquant is a curve that shows all possible combinations of inputs that can produce a given level of output.
B) An isoquant is a curve that shows the least-cost combinations of inputs that can produce a given level of output.
C) An isoquant is a curve that shows all possible combinations of inputs that are used to produce various levels of output.
D) An isoquant is a curve that shows all possible levels of output that can be produced in the short-run using one variable input.
E) An isoquant is a curve that shows all possible levels of output that can be produced at various input price levels.