A.50℃ B.630℃ C.1150℃ D.770℃
A.C%=2.11% B.C%=1.3% C.C%=4.3% D.C%=0.0218%
A.C%=2.11% B.C%=0.77% C.C%=4.3% D.C%=6.69%