In 287 BC, in the city of Athens, there lived a man named Archimedes who was a royal servant to the King. One day, the King received a crown as a birthday gift and wanted to know whether it was made of pure gold. He ordered Archimedes to find out whether the crown was indeed pure gold or an alloy. For many days, Archimedes pondered over the solution to this problem. He knew the density of gold, but could not calculate the volume of the crown. One day, as he was bathing, he realised as he got into the bath that the volume of water displaced must be exactly equal to the volume of his own body. Upon this realisation he ran across the streets naked, yelling eureka! He weighed the crown and found its volume by immersing it in water and then calculated its density. He discovered that the density did not match that of pure gold. The crown was impure, and the blacksmith responsible for its manufacture suffered the consequences.

Question: Archimedes found the weight of the crown using a balance scale
Options:
A. true, B. false, C. uncertain
Answer: "C"