Express the Sum Using Summation Notation $3 ^ { 2 } + 4 ^ { 2 } + 5 ^ { 2 } + \cdots + 9 ^ { 2 }$

Multiple Choice

Express the sum using summation notation.
- $3 ^ { 2 } + 4 ^ { 2 } + 5 ^ { 2 } + \cdots + 9 ^ { 2 }$

A)
$\sum _ { k = 1 } ^ { 9 } k ^ { 2 }$
B)
$\sum _ { k = 4 } ^ { 9 } ( k - 1 ) ^ { 2 }$
C)
$\sum_{k=3}^{9} k^{2}$
D)
$\sum_{k=3}^{n} k^{2}$