A wooden box is placed on a table. The normal force on the box from the table is N₁. Now another identical box is kept on first box and the normal force on lower block due to upper block is N₂ and normal force on lower block by the table is N₃. For this situation, mark out the correct statement(s). 

• A

  $N_1=N_2=N_3$

• B

  $N_1<N_2=N_3$

• C

  $N_1=N_2<N_3$

• D

  $N_1=N_2>N_3$