Which of the Following Is True

Multiple Choice

Which of the following is true?

A) ​Virtually all theories in economics are expressed using a ceteris paribus ("let everything else be equal" or "holding everything else constant") assumption.
B) ​The fallacy of composition is that, even if something is true for an individual, it is not necessarily true for many individuals as a group.
C) ​One must always be careful not to confuse correlation with causation.
D) ​All of the above are true.