With the AUTO BRAKE select switch at RTO, autobrake is initiated when:
A.A.Wheel speed is > 60 kts and thrust levers are retarded to IDLE.
B.B.Wheel speed is > 90 kts and thrust levers are retarded to IDLE.
C.C.Automatically when thrust levers are retarded to IDLE.
D.D.AUTO BRAKE ARM illuminated with wheel speed is > 90 kts and thrust levers are retarded to IDLE.
正确答案是B