A. The greatest common factor of B is 5 and the least common multiple is 60. These two numbers are () and () or () and () Be sure to answer within 5 minutes. I hope you will answer enthusiastically,

A. The greatest common factor of B is 5 and the least common multiple is 60. These two numbers are () and () or () and () Be sure to answer within 5 minutes. I hope you will answer enthusiastically,

namely:
5、60
Or:
15、20