Sigman Co's Inventories in Process Were at the Following Stages of of Completion

Sigman Co.'s inventories in process were at the following stages of completion at April 30:
$\begin{array}{|c|c|}\hline \text { No. of Units } & \text { Percent Complete } \\\hline 100 & 90 \\\hline 50 & 80 \\\hline 200 & 10 \\\hline\end{array}$

Equivalent units of production in ending inventory amounted to: (CPA adapted)

A) 150.
B) 180.
C) 330.
D) 350.