As shown in the figure, \( A \) is a man of mass \( 60 \mathrm{~kg} \) standing on a block \( B ...

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As shown in the figure, \( A \) is a man of mass \( 60 \mathrm{~kg} \) standing on a block \( B \) of mass \( 40 \mathrm{~kg} \) kept on ground. The coefficient of friction between the feet of the man and the block is \( 0.3 \) and that between \( B \) and the ground is \( 0.2 \). If the person pulls the string with \( 125 \mathrm{~N} \) force, then
(a) \( B \) will slide on ground
(b) \( A \) and \( B \) will move with acceleration \( 0.5 \mathrm{~ms}^{-2} \)
(c) the force of friction acting between \( A \) and \( B \) will be \( 125 \mathrm{~N} \)
(d) the force of friction acting between \( B \) and ground will be \( 250 \mathrm{~N} \)
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