Solve the Formula for the Indicated Variable $\mathrm { A } = \mathrm { P } ( 1 + \mathrm { nr } )$

Multiple Choice

Solve the formula for the indicated variable.
- $\mathrm { A } = \mathrm { P } ( 1 + \mathrm { nr } )$ , for $\mathrm { r }$

A) $r = \frac { A } { n }$
B) $r = \frac { P n } { A - P }$
C) $\mathrm { r } = \frac { \mathrm { A } - \mathrm { P } } { \mathrm { Pn } }$
D) $r = \frac { P - A } { P n }$