In the pulley system shown the movable pulleys `A,B` and `C` have mass m each, `D` and `E` are fixed pulleys. The strings are vertical light and inextensible Then
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A. the tension throughout the string is the same and equals `T =(2mg)/(3)` .
B. pulleys `A` and `B` have acceleration `(g)/(3)` each in downward direaction and pulley `C` has acceleration `(g)/(3)` in wpward direaction .
C. pulleys `A,B` and `C` all have accleration `(g)/(3)` in downward direction .
D. pulley `A` has acceleration `(g)/(3)` in downward direction and pulleys `B` and `C` have acceleration `(g)/(3)` each in upward direction .