What is Sonia's present age? I. Sonia's present age is five times Deepak's present age. II. Five years ago her age was twenty-five times Deepak's age at that time.

• A. I alone sufficient while II alone not sufficient to answer
• B. II alone sufficient while I alone not sufficient to answer
• C. Either I or II alone sufficient to answer
• D. Both I and II are not sufficient to answer
• E. Both I and II are necessary to answer