Let a > b > 0, the incorrect one in the following inequality is a.ab2ab / (a + b)

Let a > b > 0, the incorrect one in the following inequality is a.ab2ab / (a + b)

a^2+b^2>2ab
A.ab2√(ab)
B.ab2ab/[2√(ab)]=√ab
So c.2ab / (a + b) > √ AB holds
D. √ AB > 2Ab / (a + b) does not hold
D incorrect