Solve the Inequality $| 7 x + 6 | \geq 7$

Multiple Choice

Solve the inequality. Write the answer in interval notation.
- $| 7 x + 6 | \geq 7$

A) $\left[ - \frac { 13 } { 7 } , \frac { 1 } { 7 } \right]$
B) $\left[ \frac { 1 } { 7 } , \infty \right)$
C) $\left( - \frac { 13 } { 7 } , \frac { 1 } { 7 } \right)$
D) $\left( - \infty , - \frac { 13 } { 7 } \right] \cup \left[ \frac { 1 } { 7 } , \infty \right)$