It is possible that the fire in the ship was start...

Câu hỏi: It is possible that the fire in the ship was started by a bomb. 

A They say that a bomb started the fire in the ship.

B The fire in the ship might have been started by a bomb.

C It shall be said the fire in the ship had been started by a bomb.

D The fire in the ship is known to have been started by a bomb.