Solve the Equation by the Zero-Factor Property $$6 x ^ { 2 } + 23 x + 21 = 0$$

Multiple Choice

Solve the equation by the zero-factor property.
- $$6 x ^ { 2 } + 23 x + 21 = 0$$

A) $\left\{ \frac { 3 } { 2 } , \frac { 7 } { 3 } \right\}$

B) $\left\{ \frac { 2 } { 3 } , \frac { 3 } { 7 } \right\}$

C) $\left\{ - \frac { 2 } { 3 } , - \frac { 7 } { 3 } \right\}$

D) $\left\{ - \frac { 3 } { 2 } , - \frac { 7 } { 3 } \right\}$