A long block A of mass M is at rest on a...

A long block A of mass M is at rest on a smooth horizontal surface.A small block B of mass `M//2` is placed on A at one end and projected along A with some veklocity v.The coefficient of friction between the block is `mu` then , the accelerations of blocks A and B before reaching a common velocity will be respectively

`(mug)/(2)`(towards right),`(mug)/(2)`(towards left)

`(mug)/(2)`(towards right),`(mug)`(towrards left)

`(mug)`(towards right),`(mug)/(2)`(towrards left)

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