Use Sigma Notation to Write the Sum $$\frac { 1 } { 3 ( 1 ) } + \frac { 1 } { 3 ( 2 ) } + \frac { 1 } { 3 ( 3 ) } + \ldots + \frac { 1 } { 3 ( 9 ) }$$

Use sigma notation to write the sum.​ $$\frac { 1 } { 3 ( 1 ) } + \frac { 1 } { 3 ( 2 ) } + \frac { 1 } { 3 ( 3 ) } + \ldots + \frac { 1 } { 3 ( 9 ) }$$ ​

A) $\sum _ { i = 1 } ^ { 9 } - \frac { 1 } { 3 i }$
B) $\sum _ { i = 0 } ^ { 10 } \frac { 1 } { 3 i }$
C) $\sum _ { i = 1 } ^ { 9 } 3 i$
D) $\sum _ { i = 1 } ^ { 9 } \frac { 1 } { 3 i }$
E) $\sum _ { i = 1 } ^ { - 9 } \frac { 1 } { 3 i }$

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