Insert the Missing Code in the Following Code Fragment

Multiple Choice

Insert the missing code in the following code fragment. This fragment is intended to initialize an instance variable.
Public class Motor
{
Int motorSpeed;
Public Motor(int speed)
{
MotorSpeed = speed;
}
Public Motor()
{
_________;
}
}
Which of the following lines of code will allow the second constructor to call the first constructor?

A) this.motorspeed(0) ;
B) this(0) ;
C) this(speed) ;
D) You cannot call a constructor from within another constructor.