Read the following two statements and answer the question given below:Statement I: A and B together complete the work in 10 days.Statement II: A can do complete the work in 20 days.How long would it take B to complete the work? To answer the question, correct choice is:

• A. Statement I alone is sufficient, but statement II alone is not sufficient.
• B. Statement II alone is sufficient, but statement I alone is not sufficient.
• C. Both statement I and II together are sufficient.
• D. Each statement alone is sufficient.