Passage: The baseline Leopard 2, sometimes informally called the "A0" to differentiate it from later versions, was the first series manufactured version. The vehicles were manufactured from October 1979 until March 1982, altogether 380 vehicles. 209 were built by Krauss Maffei and 171 by MaK. The basic equipment consisted of electrical-hydraulic stabiliser WNA-H22, a fire control computer, a laser rangefinder, a wind sensor, a general purpose telescope EMES 15, a panorama periscope PERI R17, the tower sight FERO Z18, on the tower roof as well as a computer controlled tank testing set RPP 1–8. 200 of the vehicles had a low-light enhancer (PZB 200) instead of a thermal imaging. Two chassis served as driver training vehicles.

Question: Who built 209?
Krauss Maffei