![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
If a firm moves from one point on a production isoquant to another point on the same isoquant, which of the following will certainly NOT happen?
A.
a change in the level of output
B.
a change in the ratio in which the inputs are combined
C.
a change in the marginal products of the inputs
D.
a change in the rate of technical substitution
E.
a change in profitability