A.56<57 B.=56<57 C.TRUE D.FALSE
A.16 B.64 C.=8^2 D.8^2
A.=SUM(Sheet2;Sheet6!$A$12) B.=SUM(Sheet2:Sheet6!$A$12) C.=SUM(Sheet2:Sheet6;$A$12) D.=SUM(Sheet2:Sheet6;SA$12)