The following questions are accompanied by two statements A and B. You have to determine which statements(s) is/are sufficient/necessary to answer the questions. 4 men & 18 women can do a piece of work in 2.5 days, then in how many days 12 woman can complete the same piece of work? A. Ratio of efficiency of men to women is 3: 2. B. 6 men & 6 women can complete the same work in 4 days.

Statement A alone is sufficient to answer the question but statement B alone is not sufficient to answer the questions.

Statement B alone is sufficient to answer the question but statement A alone is not sufficient to answer the question.

Both the statements taken together are necessary to answer the questions, but neither of the statements alone is sufficient to answer the question.

Either statement A or statement B by itself is sufficient to answer the question.

Statements A and B taken together are not sufficient to answer the question.