The sales for October, November and December are $10,000, $12,000 and $18,000,

The sales for October, November and December are $10,000, $12,000 and $18,000, respectively. For any particular month of sales, the following percentages are received over time in cash: 20% in cash from that same month of sales; 50% in cash from the previous month's sales; and, 30% in cash from the sales from two months ago. What amount of cash will be received during December? 12
A) $12,600
B) $12,000
C) $9,600
D) $9,000

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