How to destroy the bottom sentry (B) ? It seems natural to proceed the same way than for the first sentry (A): let the drones get under its fire, using them as a tank, and shoot it down. But the drones won't get to this sentry because of the bouncer (right after the first sentry (A)) which will send them to the upper sentry (C).
Flying bots will engage the bottom sentry, but they don't seem to have the "tank" ability, like the regular drones, making them more resistant to sentries' fire.
So how to safely/efficiently deal with it ? Any idea or suggestion ?