Let $A , B , C$ be three sets of complex numbers as defined below
$$\begin{aligned}
& A = \{ z : \operatorname { Im } z \geq 1 \} \\
& B = \{ z : | z - 2 - i | = 3 \} \\
& C = \{ z : \operatorname { Re } ( ( 1 - i ) z ) = \sqrt { 2 } \}
\end{aligned}$$
The number of elements in the set $A \cap B \cap C$ is\\
(A) 0\\
(B) 1\\
(C) 2\\
(D) $\infty$