In 1914, international law did NOT require A) warships to allow passe

In 1914, international law did NOT require

A) warships to allow passengers aboard their enemy’s vessel to board lifeboats and clear the area before the attack.
B) warships to warn their enemy’s vessels before attacking them.
C) that commanders of warships guarantee the safety of citizens of neutral nations who were travelling aboard their enemy’s vessel.
D) merchant ships suspected of carrying war materials to be boarded and searched before they were attacked.

ANSWER
C