Question

Helppppp againnnnnnnnn

Answer 1

A.


`5-1=\boxed{4}\\\\10-5=\boxed{5}`

Not an arithmetic sequence.

B.


`-27-(-20)=-27+20=\boxed{-7}\\\\-34-(-27)=-34+27=\boxed{-7}`

An arithmetic sequence.

Answer B.