Solve for the Indicated Variable $A = \frac { t s } { 1 - ( 1 + z ) ^ { - B } }$

Multiple Choice

Solve for the indicated variable.
- $A = \frac { t s } { 1 - ( 1 + z ) ^ { - B } }$ , for B

A) $B = \frac { \ln A - \ln ( A - t s ) } { \ln ( 1 + z ) }$
B) $B = \ln \frac { t } { ( A - A s ) ( 1 + z ) }$
C) $B = \frac { \ln t } { \ln [ ( A - A s ) ( 1 - z ) ] }$
D) $B = \ln \frac { A } { ( A - t s ) ( 1 + z ) }$