10 The diagram below shows a velocity-time graph for a particle moving with velocity \(v \mathrm {~m} \mathrm {~s} ^ { - 1 }\) at time \(t\) seconds.
\includegraphics[max width=\textwidth, alt={}, center]{838f0625-95e6-4ad4-b97b-3d3f77cc7f19-16_684_1653_847_182} Which statement is correct? Tick ( \(\checkmark\) ) one box. The particle was stationary for \(9 \leq t \leq 12\) □ The particle was decelerating for \(12 \leq t \leq 20\) □ The particle had a displacement of zero when \(t = 6\) □ The particle's speed when \(t = 4\) was \(- 12 \mathrm {~ms} ^ { - 1 }\) □