Using the data shown below, the forecast for week $5$ using an exponential smoothing model is:

Week $1234$

Sales $165140115200$

Forecast $170168140\mathrm{.}1$

Multiple Choice

$164\mathrm{.}1$

Not enough information is given to produce a forecast

$200\mathrm{.}1$

$146\mathrm{.}1$