Solve for the Indicated Variable $\frac { 1 } { A } = \frac { 1 } { B } + \frac { 1 } { C }$

Multiple Choice

Solve for the indicated variable.
- $\frac { 1 } { A } = \frac { 1 } { B } + \frac { 1 } { C }$ , for $A$

A) $A = \frac { B C } { B + C }$
B) $A = 4 + B + C$
C) $A = \frac { B - C } { B C }$
D) $A = \frac { B } { B + C }$