On which day of the week did Arun visit Delhi ?
I. Arun met his friend at Agra on Wednesday.
II. Arun reached Patna on Friday, the next day he met Vilas at Delhi.

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.

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.

if the data either in ‘’statement I alone’’ or in ‘’statement II alone are sufficient’’ to answer the question.

if the data given in ‘’both the statements I and II together’’ are ‘’not sufficient’’ to answer the question, and

if the data in ‘’both the statements I and II together are necessary’’ to answer the question.