The figure gives the x-t plot of a particle executing a one-dimensional simple harmonic motion. Then the signs of position & velocity variables of the particle at t = -1.2 sec respectively are:

$\left(1\right) \mathrm{positive}, \mathrm{negative}$
$\left(2\right) \mathrm{positive}, \mathrm{positive}$
$\left(3\right) \mathrm{negative}, \mathrm{positive}$
$\left(4\right) \mathrm{negative}, \mathrm{negative}$

The position-time \((x\text-t)\) graphs for two children \(A\) and \(B\) returning from their school \(O\) to their homes \(P\) and \(Q\) respectively are shown in the graph. Choose the incorrect statement.

The instantaneous speed is always: