Express the Sum Using Summation Notation $$2 + 8 + 18 + \ldots + 72$$

Multiple Choice

Express the sum using summation notation. Use 1 as the lower limit of summation and i for the index of summation.
- $$2 + 8 + 18 + \ldots + 72$$

A) $\sum _ { \mathrm { i } = 1 } ^ { 6 } 2 ^ { 2 } \mathrm { i }$
B) $\sum _ { \mathrm { i } = 1 } ^ { 6 } 2 \mathrm { i } ^ { 2 }$
C) $\sum _ { \mathrm { i } = 0 } ^ { 6 } 2 \mathrm { i } ^ { 2 }$
D) $\sum _ { i = 1 } ^ { 6 } i ^ { 2 }$