Mopoke Ltd Provides the Following Information That Relates to the Period

Mopoke Ltd provides the following information that relates to the period ended 30 June 2014:
$$\begin{array} { | l | r | } \hline & \$ 0 \\\hline \text { Sales for the year } & 1200 \\\hline \text { Discounts provided to customers for early payment } & 500 \\\hline \text { Doubtful debts expense } & 150 \\\hline \text { Opening balance of accounts receivable } & 300 \\\hline \text { Closing balance of accounts receivable } & 900 \\\hline \text { Bad debts expense } & 20 \\\hline \text { Opening balance of the provision for doubtful debts } & 20 \\\hline \text { Closing balance of the provision for doubtful debts } & 10 \\\hline\end{array}$$
What amount of cash was received from customers during the year?

A) $1 780 000
B) $930 000
C) $1 720 000
D) $920 000