A particle is moving in a straight line along the positive `x`-axis such that its speed is inversely proportional to the distance from origin `[vprop1/ximpliesv=k/x` where `k` is the proportionally constant].
The graph of motion of the particle for `1//v` versus `x` (distance from origin) is shown in the figure.
A. The time interval of motion from point `A` to point `B` is `12.50`
B. The time interval of motion from point `A` to point `B` is `18.75s`.
C. The proportionality constant `k` is `10m^(2)//s`
D. The proportionality constant `k` is `20m^(2)//s`
