In the system shown in figure \( m_{\mathrm{A}}=4 \mathrm{~m}, m_{B}=3 \mathrm{~m} \) and \( m_{...

In the system shown in figure \( m_{\mathrm{A}}=4 \mathrm{~m}, m_{B}=3 \mathrm{~m} \) and \( m_{C}=8 \mathrm{~m} \). Friction is absent everywhere. String is light and inextensible. If the system is released from rest find the acceleration of block \( B \)
(a) \( \frac{g}{8}( \) leftward)
(b) \( \frac{g}{2}( \) leftward)
(c) \( \frac{g}{6} \) (rightward)
(d) \( \frac{g}{4} \) (rightward)