The correct options are
A The inability to solve the communal problem despite the creation of Pakistan.
B The merger of non-Muslim regions of Punjab, Bengal, and Assam into Pakistan.
C The disruption of the Indian armed forces, telegraph lines, and the postal system.
The Cabinet Mission rejected the Muslim League's demand for the creation of Pakistan as it would not solve the communal problem and it found no reason to merge the non-Muslim parts of Bengal, Punjab, and Assam. It would also result in the disruption of the Indian armed forces, telegraph lines, and the postal system. It would also cause a dilemma among the Princely States to join India or Pakistan.