The answer?
So to AUTO deploy ....MUST be
a) Speedbrake lever in the armed position..... Must YES
b) Both thrust levers retarded to IDLE Must YES as even if you use reverse thrust that requires thrust to idle
c) Wheel spinup > 60 knots NO ( strut compression will deploy them)
d) Both a) and b) YES
So A B and D are correct and I would chose D as it is "more correct"