When the outlier(s) are removed, how does the mean change?

dot plot with 1 dot over 18, 2 dots over 34, 3 dots over 38, 2 dots over 40, 3 dots over 44, 2 dots over 46, and 2 dots over 48

The mean decreases by 2.1.
The mean increases by 1.6.
The mean increases by 2.1.
There are no outliers.

please explain