Which of the following statements correctly describes the relationship between distance and displacement for a moving object?
(a) Distance is a scalar that can have negative value, while displacement is always positive.
(b) Distance depends on the chosen origin of the coordinate system, whereas displacement does not.
(c) Displacement is a vector and can be zero even when the distance covered is not zero.
(d) Distance is the shortest straight-line path between two points and includes direction.