You've decided to forecast your sales data by using a $2-$week simple moving average approach. What is the first week you could have a forecast?

Week

Income

$1$

$35$

$2$

$40$

$3$

$50$

$4$

$40$

$5$

$60$

$6$

$60$

$7$

$50$

Group of answer choices

Week $1$

Week $3$

Week $2$

Week $4$