Exercises G26

Description
The application always selects the Laser Printer by default and ignores the user's choice to print using DMP

Steps
1. Launch the application
2. Select a document to print
3. Disconnect or turn off the Laser Printer
4. Click "Print" to print the document
5. Observe the printers

Expected result: The print outs should come out from the DMP printer
Actual result: If the Laser Printer is not available, the application tries to print using the DMP, but it gives an error message and fails to print.