Label the following diagram:
Refer to the position-time graph provided below, which illustrates the motion of an object over a 16 seconds interval. The motion is divided into four distinct regions: \(A\), \(B\), \(C\), and \(D\).

Identify the type of motion in the region \(A\), \(B\), \(C\) and \(D\) and justify your answer.
1. Region \(A\) -
2. Region \(B\) -
3. Region \(C\) -
4. Region \(D\) -