Below a question is given along with two statements numbered I and II. You have to decide whether the data provided in the statements are sufficient to answer the question.

If $a$ and $b$ are integers, is $(a + b)$an odd number?

Statement I : $8 < a < 11$

Statement II : $7 < b < 10$

If the data in statement I alone are sufficient to answer the question.

If the data in statement I and statement II both are necessary to answer the question

If the data in statement I and statement II together are not sufficient to answer the question.

If the data in statement II alone are sufficient to answer the question.