老师,请问我这段程序为什么输出不符合逻辑呢,我看遍了unityAPI和百度搜索出来的东西,任然不懂

代码------------------------------------------------------------

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Test1 : MonoBehaviour {

	// Use this for initialization
	void Start () {

        StartCoroutine(A());
        StartCoroutine(B());
        Invoke("C",.3f);
	}

    IEnumerator A()
    {
        Debug.Log("AAA" + Time.time);
        Debug.Log("AAA" + Time.unscaledTime);
        Debug.Log("AAA"+Time.timeScale);
        yield return new WaitForSeconds(.1f);
        Debug.Log("AAA"+Time.time);
        Debug.Log("AAA" + Time.unscaledTime);
    }

    IEnumerator B()
    {
        yield return new WaitForSecondsRealtime(.2f);
        Debug.Log("BBB"+Time.time);
    }

    void C()
    {
        Debug.Log("CCC"+Time.time);
    }
}

打印结果-----------------------------------------------------------------------------