Answer:
E. involves unexpected attacks (usually by a small-to-medium size competitor) to grab sales and market share from complacent or distracted rivals.
Explanation:
Guerrilla warfare occurs when a smaller, less powerful army, attacks in unexpected ways a much larger, more powerful, better-equipped army, only to run and go into hiding immediately afterwards.
This translates to the market enviroment when a small, or medium-sized firms, makes small hits to a much larger company, only to assume a more conservative position immediately after.
The goal is slowly weaken the larger firm, because the smaller firm knows that it cannot directly engage against the larger firm.