I'm not sure D is wrong. From ICAO Annex 6:
2.3 Minimum control speed
2.3.1 The minimum control speed, VMC, is determined not to exceed a speed equal to 1.2VS1 , where VS1 corresponds with the maximum certificated take-off mass with:
a) maximum take-off power on all power-units;
b) landing gear retracted;
c) wing flaps in take-off position;
d) cowl flaps and radiator shutters in the position recommended for normal use during take-off;
e) aeroplane trimmed for take-off;
f) aeroplane airborne and ground effect negligible.
2.3.2 The minimum control speed is such that, when any one power-unit is made inoperative at that speed, it is possible to recover control of the aeroplane with the one power-unit still inoperative and to maintain the aeroplane in straight flight at that speed either with zero yaw or with a bank not in excess of 5 degrees.
2.3.3 From the time at which the power-unit is made inoperative to the time at which recovery is complete, exceptional skill, alertness, or strength on the part of the pilot is not required to prevent any loss of altitude other than that implicit in the loss of performance or any change of heading in excess of 20 degrees, nor does the aeroplane assume any
dangerous attitude.
2.3.4 It is demonstrated that to maintain the aeroplane in steady straight flight at this speed after recovery and before retrimming does not require a rudder control force exceeding 800 N and does not make it necessary for the flight crew to reduce the power of the remaining power-units.