StartFraction h Subscript I Baseline over h Subscript o Baseline EndFraction equals negative StartFraction d Subscript I Baseline over d Subscript o Baseline EndFraction.
B
StartFraction h Subscript I Baseline over h Subscript o Baseline EndFraction equals StartFraction d Subscript I Baseline over d Subscript o Baseline EndFraction.
C
StartFraction d Subscript I Baseline over d Subscript o Baseline EndFraction equals negative StartFraction h Subscript I Baseline over d Subscript o Baseline EndFraction.
D
StartFraction d Subscript I Baseline over d Subscript o Baseline EndFraction equals StartFraction h Subscript I Baseline over d Subscript o Baseline EndFraction.