Provide an Appropriate Response $- 3 + 9 - 27 + 81 - 243$

question 21

Multiple Choice

Provide an appropriate response.
-Which of the following express $- 3 + 9 - 27 + 81 - 243$ in sigma notation?
I. $\sum _ { k = 1 } ^ { 5 } ( - 1 ) ^ { k _ { 3 } k }$
II. $\sum _ { \mathrm { k } = 2 } ^ { 6 } ( - 3 ) ^ { \mathrm { k } - 1 }$
III. $\sum _ { \mathrm { k } = 1 } ^ { 5 } ( - 1 ) ^ { \mathrm { k } - 1 } { } _ { 3 } \mathrm { k }$

• A) II only
• B) I, II, and III
• C) III only
• D) I and II

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Definitions:

Skeleton

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