Write the Series with Summation Notation $36 + 27 + 18 + 9 + 0 + ( - 9 )$

Multiple Choice

Write the series with summation notation.
- $36 + 27 + 18 + 9 + 0 + ( - 9 )$

A) $\sum _ { i = 1 } ^ { 6 } ( - 9 i + 45 )$
B) $\sum _ { i = 1 } ^ { 6 } - 9 i$
C) $\sum _ { i = 1 } ^ { 6 } ( - 9 i + 36 )$
D) $\sum _ { i = 1 } ^ { 6 } 9 i$