Over the Past Couple of Decades, the Correlation Between the Number

Over the past couple of decades, the correlation between the number of antidepressant prescriptions and suicide rates in younger patients has been:

A) nonexistent.
B) positive; as the number of antidepressant prescriptions increases, so does the younger patient suicide rate.
C) negative; as the number of antidepressant prescriptions increases, the younger patient suicide rate decreases.
D) first negative (in the 1990s) , then positive (in the twenty-first century) .