以下程序中使用了transform对象的哪个成员函数: void Update() { // Rotate the object around its local X axis at 1 degree per second transform.Rotate(Vector3.right * Time.deltaTime); // ...also rotate around the World's Y axis transform.Rotate(Vector3.up * Time.deltaTime, Space.World); } A. Rotate B. Time C. World D. up