two blocks of masses m_a=2kg and m_b=4kg are kept on an inclined plane of inclination  = 37degree as shown.The coefficient of friction bw A and B is ₁ and bw B and surface is ₂. accelerations of blocks A and B are a₁ and a₂. then match the following.

 

          column I                                                                        column II

1.a₁=a₂                                                                                               A.   ₁= 0.3 and ₂ = 0

2.a₁a₂                                                                           B  ₁= 0.8 and ₂ = 0.8

3.if work done by friction on block B is zero,then               C. ₁= 0 and ₂ = 0.2

4.if net contact force on block A is normal force,then         D. ₁= 0.4 and ₂ = 0.8