[单选题]
What is the enthalpy change for the f f8jd- c. vgzouw5wxyyl6:l -n s80+oc6 n5 cwj:sivs .(h-bxlombustion of methane:
$CH_4$(g)+2$O_2$(g)→$CO_2$(g)+2$H_2O$(g) in kJmol$^{-1}$?
A. 4(414) + 2(498) - 2(804) - 4(463)
B. 4(414) + 2(498) - 804 - 2(463)
C. 4(414) + 4(498) - 804 - 2(463)
D. 4(414) + 4(498) - 2(804) - 4(463)