Each of the questions below consists of a question and two statements numbered I and H given below it. You have to decide whether the data given in the statements are sufficient to answer the questions. Read both the statements and—

Give answer a: if the data in statement I alone are sufficient to answer the question, while the data in statement II alone are not sufficient to answer the question.
Give answer b: if the data in statement II alone are sufficient to answer the question, while the data in statement I alone are not sufficient to answer the question.
Give answer c: if the data either in statement I alone or statement II alone are sufficient to answer the question.
Give answer d: if the data even in both statements I and II together are not sufficient to answer the questions.
Give answer e: if the data in both statements I and II together are necessary to answer the question.