Tính
A. A:
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20200228107284157200/obj20200228107284157200587650_images/obj20200228107284157200587650_img1.png)
B. B:
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20200228107284157200/obj20200228107284157200776678_images/obj20200228107284157200776678_img1.png)
C. C:
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20200228107284157200/obj20200228107284157200250316_images/obj20200228107284157200250316_img1.png)
D. D:
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/20200228107284157200/obj20200228107284157200931779_images/obj20200228107284157200931779_img1.png)
Đáp án và lời giải
Đáp án:D
Lời giải: