For positive real numbers $\mathrm{a}$, $\mathrm{b}$, and $c$
$$\begin{aligned}& \frac { a + c } { b + 2 } = \frac { c } { b } \\& \frac { a } { b } = c\end{aligned}$$
the following equalities are given.\
Accordingly, what is b?\
A) $\sqrt { 2 }$\
B) $\sqrt { 3 }$\
C) $\sqrt { 6 }$\
D) 2\
E) 3