Eye test! What number do you see? It is said that 80% of people can't see it!

Please choose one of the following options:

A. 5

B. 7

C. 1

D. 57

E. 71

F. 571

A. 5 Sorry! Wrong answer! Please answer again~ Come on!

B. 7 Sorry! Wrong answer! Please answer again~ Come on!

C. 1 Sorry! Wrong answer! Please answer again~ Come on!

D. 57 Sorry! Wrong answer! Please answer again~ Come on!

E. 71 Sorry! Wrong answer! Please answer again~ Come on!

F. 571 Congratulations! bingo! You are so smart! Answer, remember to share it~