Unit$($s$)$: Unit $2$

Keyword$($s$)$: DAU, Daily Active Users

Pancake, Inc. has the following data:

$30$ Active Users on Day $1,$

$50$ Active Users on Day $2,$

$80$ Active Users on Day $3,$

$40$ Active Users on Day $4($today$).$

What is the DAU today?

Choose one $1$ point

$40$

$80$

$200$

Unknown