A Block of Wood Half as Dense as Water Floats

Multiple Choice

A block of wood half as dense as water floats with half its volume above water.A piece of iron is then tied on top so the wood floats with only 1/4 its volume above the surface.If the wood and iron are turned over so that the iron is submerged beneath the wood,then the volume of wood above the water surface will be

A) more than 1/4.
B) less than 1/4.
C) the same,1/4.
D) There's no way to say.