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primes, 2,3,5,7,... etc..
And all members are the product of (-1) and the primes. so the larges number is the smallest absolute value of prime, Thus 2*(-1)

(1) say that its the product of -1 and prime number...well we dont what prime numbers are involved...Prime numbers could 3,5,7 etc or 2,3,5...then the highest valued could be -3 or -2

Initially I thought it is a clear A. But there is a trap here.

statement 1) says Each member of set P is the product of -1 and a prime number

that means it can be -2, -3,-5, -7,-11....... and so on....

now it is not certain how many of these numbers will be part of set. if -2 part of the set then -2 is the greatest number. but from statement A it is not certain.

statement 2) says at least one number of even. so it can be -2,-4,-6,-8.... and so on. now this statement alone can not solve the problem.

combining both the statement we get,-2 is the only prime number that is even.

So combining statement 1 and 2 we get the solution