The correct option is C All
The Kakori conspiracy was the most important action of the Hindustan Republic Association (HRA). The revolutionaries held up the 8-Down train travelling from Shahjahanpur to Lucknow at Kakori, an obscure village near Lucknow and looted its official railway cash. Government crackdown after Kakori led to arrests of many, of whom 17 were jailed, 4 transported for life and 4 - Bismil, Ashfaqullah, Roshan Singh and Rajendra Lahiri were hanged.