When Two Things, Orks and Lopas, Are Positively Correlated

Multiple Choice

When two things, orks and lopas, are positively correlated,

A) orks may cause lopas, lopas may cause orks , or both may be caused by something else.
B) it is almost certain that either orks cause lopas or lopas cause orks.
C) it is almost certain that orks and lopas are not causally related.
D) it means that one cannot be predicted from the other.