How does the Delivery Information Acquisition Device $($DIAD$)$ help UPS drivers, select all that apply.

Select one or more:

a$.$ automatically downloads routes once logged in

b$.$ allows for customer signatures to be easily captured and digitally stored

c$.$ upon delivery it connects and uploads information allowing for worldwide access to proof of delivery information

d$.$ it produces the most efficient driving routes for each delivery & driver $($based on traffic, weather, road conditions, and location$)$