What is the number? I. The sum of the two digits is 8. The ratio of the two digits is 1: 3. II. The product of the two digit of a number is 12. The quotient of two digits is 3.

1. A Option A: I alone sufficient while II alone not sufficient to answer
2. B Option B: II alone sufficient while I alone not sufficient to answer
3. C Option C: Either I or II alone sufficient to answer
4. D Option D: Both I and II are not sufficient to answer
5. E Option E: Both I and II are necessary to answer

How we write and check questions