If acceleration of $A$ is $2\,m / s ^2$ to left and acceleration of $B$ is $1\,m / s ^2$ to left, then acceleration of $C$ is -
If acceleration of $A$ is $2\,m / s ^2$ to left and acceleration of $B$ is $1\,m / s ^2$ to left, then acceleration of $C$ is -
- A
$1\,m / s ^2$ upwards
- B
$1\,m / s ^2$ downwards
- C
$2\,m / s ^2$ downwards
- D
$2\,m / s ^2$ upwards
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