An operation analyst is forecasting this year's demand for one of his company's products based on the following historical data:

YEAR QUANTITY SOLD

Four years ago $10,000$

Three years ago $12,000$

Two years ago $18,000$

Last year $20,000$

What is this year's forecast using a two$-$year weighted moving average with weights of $\mathrm{.}7$ and $\mathrm{.}3?$

Multiple Choice

$19,400$

$11,400$

$10,600$

$18,600$

$19,000$