Choose the One Alternative That Best Completes the Statement or Answers

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
Solve.
- $A = P ( 1 + n r )$ for $r$

A) $r = \frac { P n } { A - P }$

B) $r = \frac { A - P } { P n }$

C) $r = \frac { P - A } { \operatorname { Pn } }$

D) $r = \frac { A } { n }$