Công thức nào sau đây đúng?

A. ${\Delta }_r{H}_{298}^0=\sum {\Delta }_f{H}_{298}^0\left(sp\right)-\sum {\Delta }_f{H}_{298}^0\left(cđ\right)$

B. ${\Delta }_r{H}_{298}^0=\sum {\Delta }_f{H}_{298}^0\left(cđ\right)-2.\sum {\Delta }_f{H}_{298}^0\left(sp\right)$

C. ${\Delta }_r{H}_{298}^0=2.\sum E_b\left(sp\right)-\sum E_b\left(cđ\right)$

D. ${\Delta }_r{H}_{298}^0=\sum E_b\left(cđ\right)-2.\sum E_b\left(sp\right)$