Yes will run, but will be way down on power unless fuel density slection has been changed. When you run a turbine on petrol fuel flow increase is large.
Incorrect on every count. From the aircraft's training manual,
Commercial Grades Jet A, Jet A-1, and Jet B, and Military Grades JP-4 and JP-5 are recommended fuels for use in the Super King Air 200 and B200. They may be mixed in any ratio.
Aviation gasoline Grades 80 Red (formerly 80/87), 91/98, 100LL Blue (same as 100L Green in some countries), 100 Green (formerly 100/130), and 115/145 Purple are emergency fuels. Emergency fuels may be mixed with recommended fuels in any ratio. However, when aviation gasoline is used, operation is limited to 150 hours between engine overhauls.