Transpose the Formula $Y=\frac{b+I}{1-a}$ $\text { to express } a \text { in terms of } Y, b \text { and } I$

Multiple Choice

Transpose the formula $Y=\frac{b+I}{1-a}$
$\text { to express } a \text { in terms of } Y, b \text { and } I$

A)
$a=\frac{b}{Y}+\frac{I}{Y}+Y$
B) $a=\frac{b+I-1}{Y}$

C) $a=1+\frac{Y+I}{b}$

D) $a=\frac{I}{Y}-\frac{Y}{b}+1$

E) $a=1-\frac{b}{Y}-\frac{I}{Y}$