Use the Formula for the Sum of the First N $$\sum _ { i = 1 } ^ { 90 } - 5 i$$

Multiple Choice

Use the formula for the sum of the first n terms of an arithmetic sequence to find the indicated sum.
- $$\sum _ { i = 1 } ^ { 90 } - 5 i$$

A) $- 20,475$
B) $- 20,702$
C) $- 20,247$
D) $- 20,470$