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A block `A` of mass `m_1` rests on a horizontal table. A light string connected to it passes over a frictionless pulley at the edge of table and from its other end another block `B` of mass `m_(2)` is suspended. The coefficient of knetic friction between the block and table is `mu_(k)` . When the block `A` is sliding on the table, the tension in the string is.

A

`(m_(1)m_(2)(1+mu_(k))g)/((m_(1)+m_(2)))`

B

`(m_(1)m_(2)(1-mu_(k))g)/((m_(1)+m_(2)))`

C

`((m_(2)+mu_(k)m_(1))g)/((m_(1)+m_(2)))`

D

`((m_(2)-mu_(k)m_(1))g)/((m_(1)+m_(2)))`

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