The D-Metals Can Be Mixed Together to Form a Wide

The d-metals can be mixed together to form a wide range of alloys because

A) the d-electrons interact strongly with each other.
B) the d-metals have a wide range of metal radii.
C) the nucleus is well shielded by the d-electrons.
D) the range of d-metal radii is not very great.
E) the d-metals have low melting points.