Express the Sum Using Summation Notation $\sum _ { k = 0 } ^ { 7 } 2 k$

Multiple Choice

Express the sum using summation notation.
-2 + 4 + 6 + ... + 14 A)
$\sum _ { k = 0 } ^ { 7 } 2 k$

B) $\sum _ { k = 1 } ^ { 7 } 2 k$

C) $\sum _ { k = 1 } ^ { 7 } k ^ { 2 }$

D)
$\sum _ { k = 1 } ^ { 7 } 2 k ^ { 2 }$