Evaporation May Have Concentrated Chemical Monomers to the Point Where

Evaporation may have concentrated chemical monomers to the point where polymerization was favored in which type of environment?

A) Hydrothermal vents deep in the ocean
B) Inclusions of water within frozen ice on early Earth
C) Hot pools at the edges of oceans
D) The large surface areas of solid mineral surfaces, such as powderlike clays
E) Cooling lava produced by volcanoes