Which line contains a constructor in this class definition?  

public class Counter { //(1)
	int current,step;
	public Counter(int startValue,int stepValue){ //(2)
		set(startValue);
		setStepValue(stepValue);
	}
	public int get(){  //(3)
		return current;
	}
	public void set(int value){ //(5)
		current=value;
	}
	public void setStepValue( int stepValue){ //(5)
		step=stepValue;
	}
}

A、Code marked with (1) is a constructor

B、Code marked with (2) is a constructor

C、Code marked with (3) is a constructor

D、Code marked with (4) is a constructor

E、Code marked with (5) is a constructor