Evaluate the Sum $$\sum _ { k = 1 } ^ { 158 } \left( 7 - \frac { 1 } { 4 } k \right)$$

Evaluate the sum.
- $$\sum _ { k = 1 } ^ { 158 } \left( 7 - \frac { 1 } { 4 } k \right)$$

A) $4,246.25$
B) $- 1,994.75$
C) $3,140.25$
D) $- 2,034.25$