Which is correct for any kind of species?

1.	Which is correct for any kind of species?
Answer» `(E_(2)-E_(1))GT (E_(3)-E_(2)) gt (E_(4)-E_(3))` `(E_(2)-E_(1)) gt (E_(3)-E_(2)) lt (E_(4)-E_(3))` `(E_(2)-E_(1))=(E_(3)-E_(2))=(E_(4)-E_(3))` `(E_(2)-E_(1))=1//4(E_(3)-E_(2))=1//9(E_(4)-E_(3))` ANSWER :A

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