A) If Int(A)=A And Sqr(A) >=100 Then Print"OK"Else Print "Error" B) If Fix(A)=A And Alos(A) >=100 Then Print"OK"Flse Print "Error" C) If Int(A)=A And Sqr(A>=100,A<=-100) Then Print"OK"Else Print "Error" D) If Fix(A)=A And Abs(A>=100,And A<=-100)Then Print"OK"Else Print "Error\