Statement I indicates that the sum of any two numbers in T is even, suggesting that both numbers must come from the same subset (either X or Y). However, without knowing if T exclusively consists of even or odd numbers, we cannot determine if all numbers are from Y. Statement II supports that if both numbers are from T, (p − 1)q is even, but it also does not clarify the nature of numbers in T. Thus, both statements do not provide sufficient clarity to definitively conclude whether all numbers in T are from Y.