Let $\mathbf { A } = \{ \mathbf { a } , \mathbf { b } , \mathbf { c } , \mathbf { d } \}$. For non-empty subsets $X , Y$ of A
$$\begin{aligned}
& X \cap Y = \emptyset \\
& X \cup Y = A
\end{aligned}$$
How many ordered pairs (X, Y) are there such that these conditions hold?\\
A) 6\\
B) 8\\
C) 10\\
D) 12\\
E) 14