A Potential Limitation of True Experiments Is That They

A potential limitation of true experiments is that they:

A) cannot show covariation as well as studies that use correlation.
B) may control variables so much that it is difficult to generalize findings to the real world.
C) are ultimately unable to show causation and can show only time-order and elimination of plausible alternative explanations.
D) cannot accurately reflect time-order, in which one event must occur before another.