Solve the System for X and Y Using Cramerʹs Rule $$a x + b y = \frac { a } { b }$$

Multiple Choice

Solve the system for x and y using Cramerʹs rule. Assume a and b are nonzero constants.
- $$a x + b y = \frac { a } { b }$$
$$x + y = \frac { 1 } { a }$$

A) $\left\{ \left( \frac { a + b } { a b } , - \frac { 1 } { b } \right) \right\}$
B) $\left\{ \left( \frac { a - b } { a b } , \frac { 1 } { b } \right) \right\}$
C) $\left\{ \left( \frac { a b } { a + b } , - b \right) \right\}$
D) $\left\{ \left( \frac { a b } { a + b } , - \frac { 1 } { b } \right) \right\}$