A stone artist creates flower or star motifs by stacking colored stones on top of each other.
This artist creates:
\begin{itemize}
\item a flower motif with 4 rows of 25 stones each,
\item a star motif with 3 rows of 30 stones each in each row.
\end{itemize}
This artist created 12 motifs using a total of 1150 stones.
Accordingly, how many flower motifs did the artist create?\\
A) 4\\
B) 6\\
C) 7\\
D) 9\\
E) 10