According to the author, who should shoulder the major responsibility for allowing the 9/11 tragedy to happen

A．He had been intentionally misleading as to the reasons of initiating the two wars.
B．He had been late in preventing the attacks because of a personal vocation.
C．He had done everything to help the 9/11 commission do a better job.
D．He will have probably failed to be reelected if the public had been well informed.

A．To hide the important details of
B．To report or represent in a untrue way
C．To form a large group
D．To become no longer secret