melting is when solids are heated above their melting point. Which is most accurate? ['melting is when solids are heated above their melting point; freezing is when solids are cooled from liquid to solid', 'melting is when solids are heated above their melting point; melting is when solids are cooled from liquid to solid', 'freezing is when solids are heated above their melting point; melting is when solids are cooled from liquid to solid', 'freezing is when solids are heated above their melting point; freezing is when solids are cooled from liquid to solid']