A) Swedish fire hose with a manual water pump.

B) Sniper rifles at short range for killing termites with precision.

C) A sawed-off shotgun with the other end glued to the other side of a painted cardboard, making the soldier look invulnerable.

D) Mine detonation at short range.

"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram