In All Partial Tables,the Conditional Distributions of Y Are the Same

Multiple Choice

In all partial tables,the conditional distributions of Y are the same for each value of X.In the bivariate table,the conditional distributions of Y were quite different for each value of X.This pattern

A) is mathematically impossible.
B) suggests a direct relationship between X and Y.
C) suggests a spurious relationship between X and Y.
D) suggests an interactive relationship between Z and Y.