A question is given followed by two statements I and II. Consider the questions and the statements and tick the correct option.
If the (p+ q)^2 – 4pq, Where p, q are natural numbers, positive?
Statement I- p q
Which one of the following option is correct in respect of above question and the statement?

The question can be answered by using one of the statements alone, but cannot be answered using the other statement alone.

The question can be answered by either statement alone.

The questions can be answered by using the both statements together, but cannot be answered using either statement alone.

The question can be answered without using any of the statements.