A. Secret persons shall strike with weapons, fire or poison.
B. Clans mutually supporting each other shall be made to strike at the weak points.
C. He shall destroy their caravans, herds, forests and troop reinforcements.
D. The conqueror shall cause enemy kingdom to be destroyed by neighboring kings, jungle tribes, pretenders or unjustly treated princes.
When $10^{100}$ is divided by 7, the remainder is ?