What is the difference between the two digits in a two digit number ?
A. The sum of the two digits is 8.
B. 1/5 of that number is 15 less than 1/2 of 44.

If the data in statement B alone are sufficient to answer the question while the data in statement A alone are not sufficient to answer the question.

If the data in statement A alone are sufficient to answer the question, while the data in statement B alone are not sufficient to answer the question.

If the data either in statements A alone or in statement B alone are sufficient to answer the question.

If the data in both the statements A and B together are not sufficient to answer the question.