The Sales of a New Model of Notebook Computer Are $$S ( x ) = 5000 - 12,000 e ^ { - x / 8 }$$

Multiple Choice

The sales of a new model of notebook computer are approximated by $$S ( x ) = 5000 - 12,000 e ^ { - x / 8 }$$ , where x represents the number of months the computer has been on the market and S represents sales in thousands of
Dollars. In how many months will the sales reach $1,500,000?

A) 20 months
B) 13 months
C) 17 months
D) 10 months