If the polynomial 4A ^ 2 + 1 is added with a monomial to make it a complete square, then the added monomial can be (fill in one that you think is correct)

If the polynomial 4A ^ 2 + 1 is added with a monomial to make it a complete square, then the added monomial can be (fill in one that you think is correct)

4a^2+1+4a
4a^2+1-4a
4a^2+1+4a^4