A function $f$ defined on the set of integers satisfies the following equalities for every integer $n$:
$$\begin{aligned}
& f ( n + 2 ) = f ( n ) + 4 \\
& f ( n + 3 ) = f ( n ) + 6
\end{aligned}$$
Given that $f ( 4 ) = 5$, what is the value of $f ( 11 )$?\\
A) 15\\
B) 17\\
C) 19\\
D) 21\\
E) 23