Solve the Equation and Check $\frac { r } { 18 } + 2 = 4$

Multiple Choice

Solve the equation and check. $\frac { r } { 18 } + 2 = 4$

A) $r = 25$
B) $r = \frac { 1 } { 9 }$
C) $r = 36$
D) $r = \frac { 1 } { 3 }$
E) $r = 113$