Please give very detailed solution for the following question

Please give very detailed solution for the following question Two blocks Of mass m each are moving vertically downward under the influence of an external force fand gravity as shown in figure a -Y ßmca ; A) contact force between blocks will break and normal reaction between the blocks will be 7ßro B) Both block move in combination with common acceleration C) contact force between blocks is D) Both blocks move is combination with common acceleration E) both b & c are correct Two horizo