In the Context of Relationship Between Variables, Identify a Difference

In the context of relationship between variables, identify a difference between negative and curvilinear relationships.

A) In a negative relationship, variables have an inverse relationship; whereas in a curvilinear relationship, variables can have both increase and decrease in values.
B) A negative relationship is represented by an increasing-trend line on a graph; whereas curvilinear relationship is represented with a straight line on a graph.
C) A negative relationship has more than one extraneous variable associated with it, whereas curvilinear relationship has only one associated extraneous variable.
D) In a negative relationship, the cause variable is always dependent, whereas in a curvilinear relationship, the cause variable is independent.