People's Use of Marijuana Correlates Positively with Their Probability of Developing

Multiple Choice

People's use of marijuana correlates positively with their probability of developing schizophrenia.What,if anything,can we conclude from this observation?​

A) Marijuana increases the risk of schizophrenia.
B) ​People developing schizophrenia become more likely to use marijuana.
C) ​Neighborhoods where schizophrenia is common tend to have easy access to marijuana.
D) ​We can draw none of these conclusions.