According to the statement, man evolved from a monkey and X is a monkey, but the time is not given in how many years will this happen.
As X is a monkey, will not live long enough to become a man so, Conclusion I does not follow.
It is not given that Man can become a monkey as we are not given whether the evolution is unidirectional or reversible.
So, Conclusion II does not follow.
The correct option is (C):Neither I nor II follows