Given the Following List of Densities,which Materials Would Float in a Molten

Multiple Choice

Given the following list of densities,which materials would float in a molten vat of lead provided that they do not themselves melt? Densities (g/mL) : lead = 11.4,glass = 2.6,gold = 19.3,charcoal = 0.57,platinum = 21.4.

A) gold and platinum
B) glass and charcoal
C) gold,platinum,glass and coal
D) gold and charcoal
E) none of the above