Design a digital control system to operate a car alarm. The system has 5 sensors with the following functions:

- S1 and S2 located in the driver and passenger seats respectively which are activated in when it's detected someone is seated on them.
- S3 indicating the presence of "0" or absence "1" of the key in the ignition.
- S4 and S5 warn on "0" when the driver's and passenger's seat belts are not fastened.

There is an output (Z) of the alarm that will be activated in "0" when it is detected that with the vehicle in motion (ignition key on), while the driver and/or passenger seat is occupied, one of the respective belts is not fastened.

A) Make the truth table of the system.