A body starts at a point and reaches the same point after time t. Which of the following represents its displacement time graph?
Option B: The body starts at the reference point and reaches the reference point at time t. So, this option is correct.
Option C: The body starts at the at a certain point from the reference point and reaches the same point at time t. So, this option is correct.
Options A and D: Body start at reference point but at time t the position of the body is not the initial point. So there are incorrect.