In the following question is followed by two statements I and II. Select the choice as follows
If I alone is sufficient to answer the question
If II alone is sufficient to answer the question
If I and II are both required to answer the question
If both I and II are insufficient to answer the question and more data is required

Can Mohan be considered a successful mountaineer:
I. Mohan has taken part in seven mountaineering expeditions in the last ten years
II. The norm for a mountaineer to be considered successful is being a member of expeditions 4 to 5 times in fifteen years