A block of  mass 2Kg is kept on a rough horizontal surface. It is pulled by applying a horizontal force F $\left({\mathrm{\mu }}_{\mathrm{s}}=0.6\text{ and }{\mathrm{\mu }}_{\mathrm{k}}=0.4\right)$
i)  If F = 12 N, frictional force on the block is 7.84N
ii)  If F = 10 N, frictional force on the block is 10 N
iii)  If F = 7.84 N, frictional force on the block is zero

• A

  i and ii are correct  

• B

  ii and iii are correct  

• C

  i and iii are correct 

• D

  All are correct