A 78.0-kg person puts on a life jacket, jumps into the fresh water, and floats. The jacket has a volume of 2.90 x 10^(-2) m³ and is completely submerged under the water. The volume of the person's body that is underwater is 5.70 x 10^(-2) m³. What is the density of the life jacket
a) 1280 kg/m³
b) 900 kg/m³
c) 500 kg/m³
d) 150 kg/m³