Dr Luigi Has Discovered That the More Spaghetti People Eat

Dr. Luigi has discovered that the more spaghetti people eat, the less likely they are to be diagnosed with depression. Based on this finding, what statement can be made about the relationship between spaghetti and depression?

A) There is a positive correlation between spaghetti eating and depression.
B) There is a negative correlation between spaghetti eating and depression.
C) Spaghetti prevents depression.
D) Italians are happy.