In each of the three arrangements,the block of mass $m_1$ is being pulled left with constant velocity $v$. There is no friction anywhere. The strings are light and inextensible and pulleys are massless. The ratio of the speed of the block of mass $m_2$ in the three cases respectively is
- A$2 : 1 : 4$
- B$2 : 4 : 1$
- C$4 : 2 : 1$
- D$1 : 0.5 : 2$
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