first thing to notice here is that we don't have to actually find such prime, we only need to determine whether we could find it theoretically and practically.

1) We know the starting point, all we have to do next is to find next 100 primes, and P definitely will be the last 100th term.
2)The same idea here, we know the total number of primes between 1 and 3912, we could write them on paper and finally have the solvent.
Is the answer is D?

stmt 1:
We can find the 1st 100 prime nos.
Sufficient

stmt 2:
We can find the no. of prime nos. between 1 and 3912
Sufficient

Ans D