Write the Following Sum in Sigma Notation $\sum _ { k = 1 } ^ { 6 } 2$

Multiple Choice

Write the following sum in sigma notation.2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 + 2

A) $\sum _ { k = 1 } ^ { 6 } 2$
B) $\sum _ { k = 1 } ^ { 8 } 2$
C) $\sum _ { k = 1 } ^ { 9 } 2$
D) $\sum _ { k = 1 } ^ { 7 } 2$