What is the sum of the first 20 terms of an Arithmetic Progression?
(I) The common difference of the Arithmetic Progression is 5.
(II) The $$5^{th}$$ and the $$7^{th}$$ term of Arithmetic Progression are 13 and 17 respectively.

if the statement (I) alone is sufficient to answer the question, but (II) does not answer the question.

if the statement (II) alone is sufficient to answer the question but (I) does not answer the question.

if both the statements (I) and (II) are sufficient to answer the question but neither statement alone is sufficient.

if both the statements (I) and (II) together are not sufficient to answer the question and additional data is required.