单项选择题

有类定义如下:气
  class Type {
  public:
  Type (int i=0);
  Tvpe operator -(int);
  friend Type operator + (Type, Type );
  private:
  int val;
  若有对象定义Type cl;则下列语句序列中,错误的是()

A.Type(3)+c1;
B.cl+Type(3);
C.3-cl;
D.c1-3;