Together, the two statements are sufficient.

Statement 1 alone is sufficient.

Statement 2 alone is sufficient.

Either of the statements is sufficient.

Neither of the statements, separate or together, is sufficient.

Either statement is sufficient to answer the question.

Both statements are needed to answer the question.

Statement II is sufficient to answer the question, but statement I is not sufficient to answer the question.

Statement I is sufficient to answer the question, but statement II is not sufficient to answer the question.

Neither statement is sufficient to answer the question. More information is needed.