Solve the Equation for the Indicated Variable $P = \frac { I } { r t }$

Multiple Choice

Solve the equation for the indicated variable.
-I = Prt for P

A) $P = \frac { I } { r t }$
B) P = r - It
C) $P = \frac { r - I } { 1 + t }$
D) $\mathrm { P } = \frac { \mathrm { r } - 1 } { \mathrm { It } }$