$A$ particle starts rotating from rest. Its angular displacement is expressed by the following equation $\theta = 0.025t^2 - 0.1t$,where $\theta$ is in radians and $t$ is in seconds. The angular acceleration of the particle is:
- A$0.5 \, rad/s^2$ at the end of $10 \, s$
- B$0.3 \, rad/s^2$ at the end of $2 \, s$
- C$0.05 \, rad/s^2$ at the end of $1 \, s$
- DConstant $0.05 \, rad/s^2$
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